32/9 - x = 1/3 + 1/3 +1/3
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Tìm x biết : 32/9 - x - 5/12 = 1/3 + 1/3 + 1/3
giải
32/9-x-5/12= 1/3 + 1/3 +1/3
32/9-x-5/12 =1
32/9-x=1+ 5/12
32/9-x=17/12
x=32/9-17/12
x=77/36
thế đó bạn
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Tìm x biết : 32/9 - x - 5/12 = 1/3 + 1/3 + 1/3
Tìm x biết 32/9-x-5/12=1/3+1/3+1/3
1-3+32-33+....+(-3)x=\(\dfrac{9^{1000+1}}{4}\)
1) Tìm x, biết:a) 3 + |-x| |-7|b) -3 + |1 - x| |-2|c) 5 + |-1 + x| -|2|d) -|3| + |2x| |-3|e) 1 + |-x + 2| -|7|g) -32 + |x - 16| |12|h) |-32| - |x - 16| |-12|i) -|32| - |16 - x| |-32|2) Tìm x, biết:a) |x| 10b) |x| 0c) |x| -13) Tính tổng các số nguyên sau:a) -9 x 9b) -10 x le10c) -9 x 10
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1) Tìm x, biết:
a) 3 + |-x| = |-7|
b) -3 + |1 - x| = |-2|
c) 5 + |-1 + x| = -|2|
d) -|3| + |2x| = |-3|
e) 1 + |-x + 2| = -|7|
g) -32 + |x - 16| = |12|
h) |-32| - |x - 16| = |-12|
i) -|32| - |16 - x| = |-32|
2) Tìm x, biết:
a) |x| < 10
b) |x| > 0
c) |x| < -1
3) Tính tổng các số nguyên sau:
a) -9 < x < 9
b) -10 < x \(\le\)10
c) -9 < x < 10
1 a x=4
b x=-4
c x=-7
d x=3
e x=10
g x=60
h x=36
i x=16
2a 1,2,3,4,5,6,7,8,9
b 1,2,3,4,5,6,7,8,9.........
c rỗng
3a 0
b 0
c10
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Bạn cho mình các bước giải được không?
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tính nhanh
4/5-2/3/+1/5-1/3
2/5 x 7/4 - 2/5x3/7
13/4 x 2/3 x 4/13 x 3/12
75/100 + 18/21 + 19/32 +1/4 + 3/21 + 13/32
2/5 + 6/9+3/4+3/5+1/3+1/4
Bài giải
a, \(\frac{4}{5}-\frac{2}{3}+\frac{1}{5}-\frac{1}{3}\)
\(=\left(\frac{4}{5}+\frac{1}{5}\right)-\left(\frac{2}{3}+\frac{1}{3}\right)=1-1=0\)
b, \(\frac{2}{5}\text{ x }\frac{7}{4}-\frac{2}{5}\text{ x }\frac{3}{7}\)
\(=\frac{2}{5}\text{ x }\left(\frac{7}{4}-\frac{3}{7}\right)=\frac{2}{5}\text{ x }\frac{37}{28}=\frac{37}{70}\)
c, \(\frac{13}{4}\text{ x }\frac{2}{3}\text{ x }\frac{4}{13}\text{ x }\frac{3}{12}=\frac{13\text{ x }2\text{ x }4\text{ x }3}{4\text{ x }3\text{ x }13\text{ x }12}=\frac{1}{6}\)
d, \(\frac{75}{100}+\frac{18}{21}+\frac{19}{32}+\frac{1}{4}+\frac{3}{21}+\frac{13}{32}\)
\(=\frac{3}{4}+\frac{18}{21}+\frac{19}{32}+\frac{1}{4}+\frac{3}{21}+\frac{13}{32}\)
\(=\left(\frac{3}{4}+\frac{1}{4}\right)+\left(\frac{18}{21}+\frac{3}{21}\right)+\left(\frac{19}{32}+\frac{13}{32}\right)\)
\(=1+1+1\)
\(=3\)
e, \(\frac{2}{5}+\frac{6}{9}+\frac{3}{4}+\frac{3}{5}+\frac{1}{3}+\frac{1}{4}\)
\(=\frac{2}{5}+\frac{2}{3}+\frac{3}{4}+\frac{3}{5}+\frac{1}{3}+\frac{1}{4}\)
\(=\frac{1}{5}\left(2+3\right)+\frac{1}{3}\left(2+1\right)+\frac{1}{4}\left(3+1\right)\)
\(=\frac{1}{5}\cdot5+\frac{1}{3}\cdot3+\frac{1}{4}\cdot4\)
\(=1+1+1\)
\(=3\)
a, \(\frac{4}{5}-\frac{2}{3}+\frac{1}{5}-\frac{1}{3}\)
\(=\left(\frac{4}{5}+\frac{1}{5}\right)-\left(\frac{2}{3}+\frac{1}{3}\right)=1-1=0\)
b, \(\frac{2}{5}\text{ x }\frac{7}{4}-\frac{2}{5}\text{ x }\frac{3}{7}\)
\(=\frac{2}{5}\text{ x }\left(\frac{7}{4}-\frac{3}{7}\right)=\frac{2}{5}\text{ x }\frac{37}{28}=\frac{37}{70}\)
c, \(\frac{13}{4}\text{ x }\frac{2}{3}\text{ x }\frac{4}{13}\text{ x }\frac{3}{12}=\frac{13\text{ x }2\text{ x }4\text{ x }3}{4\text{ x }3\text{ x }13\text{ x }12}=\frac{1}{6}\)
d, \(\frac{75}{100}+\frac{18}{21}+\frac{19}{32}+\frac{1}{4}+\frac{3}{21}+\frac{13}{32}\)
\(=\frac{3}{4}+\frac{18}{21}+\frac{19}{32}+\frac{1}{4}+\frac{3}{21}+\frac{13}{32}\)
\(=\left(\frac{3}{4}+\frac{1}{4}\right)+\left(\frac{18}{21}+\frac{3}{21}\right)+\left(\frac{19}{32}+\frac{13}{32}\right)\)
\(=1+1+1\)
\(=3\)
e, \(\frac{2}{5}+\frac{6}{9}+\frac{3}{4}+\frac{3}{5}+\frac{1}{3}+\frac{1}{4}\)
\(=\frac{2}{5}+\frac{2}{3}+\frac{3}{4}+\frac{3}{5}+\frac{1}{3}+\frac{1}{4}\)
\(=\frac{1}{5}\left(2+3\right)+\frac{1}{3}\left(2+1\right)+\frac{1}{4}\left(3+1\right)\)
\(=\frac{1}{5}\cdot5+\frac{1}{3}\cdot3+\frac{1}{4}\cdot4\)
\(=1+1+1\)
\(=3\)
a , =(4/5+1/5)-(2/3+1/3)=1-1=0
b , =2/5 x (7/4-3/7) =2/5 x 37/28 =74/140=37/70
c, =13/4 x 2/3 x 13/4 x 2/3=26/12 x 26/12= 13/6 x 13/6 =13 x 13/6 x 6(gạch 13 trên tử thì tử còn 1 x 13,mẫu hết.) =1 x 13/1=13
d, =3/4+6/7+19/32 +1/4+1/7 +13/32=(3/4+1/4 )+(6/7+1/7)+(19/32+13/32)=1+1+1=3
e, =(2/5+3/5)+(2/3+1/3)+(3/4+1/4) [6/9 rút gọn thành 2/3] =1+1+1=3
Tính:
a) 2/3 + 52 - 3/4
b) 2/5 x 1/2 : 1/3
c) 1/2 x 1/3 + 1/4
d) 2/7 : 2/3 - 1/7
e) 7/9 x 3/14 : 5/8
g) 5/12 - 7/32 : 21/16
LP
19 tháng 12 2021 lúc 8:52
Bài 1: Thực hiện phép tính.A) 3: ( -1/2 )2 + 1/9 x Căn 36B) 81 x ( 1/3)3 + 1/3C) Căn 12 + Căn 27 - Căn 3D) -32 - ( 1/2)-2 : 2 + (2/3)0 : (3/4)-1E) 3/4 - ( -1/2 )2F) 15/16 : (-2 2/3) + 15/16 : ( -1 3/5 )G) 3/5 + -1/4 + 3/20H) 3: ( -3/2)2 + 1/9 x căn 36I) 272 x 85/ 66 x 323 J) (0.8)5/ (0.4)6K) 272/ 242L) (0.125)3 x 83M) (-39)4 : 134N) (0.6)5/ (0.2)6O) ( 3/7 + 1/2 )2P) 2:(1/2 - 2/3 )2Q) 9x (-1/3)3 + 1/3
Đọc tiếp
Bài 1: Thực hiện phép tính.
A) 3: ( -1/2 )2 + 1/9 x Căn 36
B) 81 x ( 1/3)3 + 1/3
C) Căn 12 + Căn 27 - Căn 3
D) -32 - ( 1/2)-2 : 2 + (2/3)0 : (3/4)-1
E) 3/4 - ( -1/2 )2
F) 15/16 : (-2 2/3) + 15/16 : ( -1 3/5 )
G) 3/5 + -1/4 + 3/20
H) 3: ( -3/2)2 + 1/9 x căn 36
I) 272 x 85/ 66 x 323
J) (0.8)5/ (0.4)6
K) 272/ 242
L) (0.125)3 x 83
M) (-39)4 : 134
N) (0.6)5/ (0.2)6
O) ( 3/7 + 1/2 )2
P) 2:(1/2 - 2/3 )2
Q) 9x (-1/3)3 + 1/3
c: \(=2\sqrt{3}+3\sqrt{3}-\sqrt{3}=4\sqrt{3}\)
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8. x3 - 4x2 +8x- 32 = 0
9. x3 +27+(x+3)(x-9) = 0
10. x² -10x +16 = 0
11. 2x2 + 3(x-1)(x+1)=5x(x+1)
12. (х+3)(х-3)-(х-2)(х+5)=0