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Các câu hỏi tương tự
Tìm số nguyên x, biết:
1) -16 + 23 + x = - 16
2) 2x – 35 = 15
3) 3x + 17 = 12
4) (2x – 5) + 17 = 6
5) 10 – 2(4 – 3x) = -4
6) - 12 + 3(-x + 7) = -18
Bài 8: tìm x
a) x + 10 = 20
b) 2 . x + 15 = 35
c) 3 ⋅ ( x + 2 ) = 15
d) 10 . x + 15 . 11 = 20 . 10
e) 4 . ( x + 2 ) = 3 . 4
f) 33 x + 135 = 26 . 9
g) 2 . x + 15 + 16 + 17 = 100
h) 2 . (x + 9 + 10 + 11) = 4 . 12 . 25
Câu 1:30.45+55.30–30.305√2.2√2–1+13515+(-3)+|-111+(-10)|-3|15–{200:[ 30+( 16+2√15 : 2√12 )]}Câu 2:x –20 -36( 5x – 25 ) : 4 + 75 125| x – 4 | 9( 3x – 17 ) . 16 645x –18 -32 . | x | –5 3x – 5 ( -14 ) + 8| 2x – 7 | – | -3/2 | 7Câu 3:21 . 16 + 21 . 59 + 21 . 3580 – ( 4 . 25 – 3 . 8 ) ( -12 ) + 83 + ( -48 ) + 17| ( -12 ) + ( -7 ) | . 2 – 30 8 . ( -7 ) + ( +3 ) . 8| -5 | + | 16 | + | 5 |
Đọc tiếp
Câu 1:
30.45+55.30–30.30
5√2.2√2–1+135
15+(-3)+|-111+(-10)|-3|
15–{200:[ 30+( 16+2√15 : 2√12 )]}
Câu 2:
x –20= -36
( 5x – 25 ) : 4 + 75 = 125
| x – 4 | = 9
( 3x – 17 ) . 16 = 64
5x –18 = -3
2 . | x | –5 = 3
x – 5 = ( -14 ) + 8
| 2x – 7 | – | -3/2 | = 7
Câu 3:
21 . 16 + 21 . 59 + 21 . 35
80 – ( 4 . 25 – 3 . 8 )
( -12 ) + 83 + ( -48 ) + 17
| ( -12 ) + ( -7 ) | . 2 – 30
8 . ( -7 ) + ( +3 ) . 8
| -5 | + | 16 | + | 5 |
Bài 8: tìm x
a) x + 10 = 20
b) 2 . x + 15 = 35
c) 3 ⋅ ( x + 2 ) = 15
d) 10 . x + 15 . 11 = 20 . 10
e) 4 . ( x + 2 ) = 3 . 4
f) 33 x + 135 = 26 . 9
g) 2 . x + 15 + 16 + 17 = 100
h) 2 . (x + 9 + 10 + 11) = 4 . 12 . 25
Tìm x
a , x - 6 : 2 - ( 48 - 24 ) : 2 : 6 - 3 = 0
c , 42 - 2 * ( x + 16 ) + 12 : 2 = 6
d , ( 697 : 17 ) * x = 672 - 15 * x
e , 8 * x = 75 : 3 + 35 - 2 : x
g , 3 * x - 15 * 4 = 6 * ( 2 - x )
h , 129 - 5 * ( x + 1 ) = 98 + ( 136 : 17 ) * x
bai 1:
a, [(17+16)-15.(14-13)].12+11
b,(124.42+96).17:12:34
c,122.(152-200):(23.3)
Tìm x , y biết
a ) x mũ 2 = x mũ 5
b ) ( 3x - 12 )mũ 15 = ( x - 17)mũ 15
c ) ( 4x - 16 )mũ 15 - ( x - 2 )mũ 15 = 0
d ) ( x - 3 )mũ 11 = ( 2x - 6 )mũ 11
BÀI 1: Tính
1) -(-10)-(+14)
2) -(+15)-12
3) (-11)-(-13)
4) -(-13)-(-10)
5) -4-(+7)
BÀI 2: Tìm x biết:
1) x+(-5)= -(-7)
2) x-8= -(+10)
3) x-(-12)= 14
4) x-(+3)= -17
5) x+20= -(-23)
BÀI 3: Tính:
1) 17-(-19)-(+25)
2) -[-13]-[15]+(-20)
3) [-17]-(-16)-(+23)
4) -(-25)-[-14]+[-17]
BÀI 1 : TÍNH NHANH
A) (1/9 - 9/17 ) + 3/6 - (12/17 - 1/2 ) + 5/9
B) 7/32 × ( -9/12 - 16/30 ) - ( 7/32 - 15 )
C) 3/10 × ( -5/9 + 3/5 ) - 3/10 × ( 3/9 + -2/5 )
D) -2/5 × ( 5/17 - 9/15 ) - 2/5 × ( 2/17 + -2/5 )
E) [ -5/13 - ( 3/5 +3/13 - 4/10 ) ] ÷ -15/11
G) 2/19 × ( -9/27 × 54/63 ÷ 5/7 )