x + 25 - x + 25 = 100
giúp mình tính
x-25.x/100=60-x+25.x/100 hãy tìm x
( 1/24 x 25 + 1/25 x 26 + ... + 1/29 x 30 ) x 150 + 103/100 [ 103/100 x ( X - 1 ) ] = 22
25 x 25 x 25 x 100 = ???
Ai nhanh Mk Tick Nhak <3
25 x 25 x 25 x100
= 15625 x 100
= 1562500
1) 444 x 5 = 222 x 2 x 5 = 222 x 10 = 2220
a.Đúng b.Sai
2) 282 x 5 = 280 + 2 x 5 = 280 x 10 = 2800
a.Đúng b. Sai
3) 4 x 8 x 7 x 25 = (8 x 7) x (25 x4) = 56 x 100 = 5600
a.Đúng b.Sai
4) 25 x 8 x 9 = (25 x 4) x (4 x 9) = 100 x 36 = 3600
a.Đúng b.Sai
1. 444 x 5 = 222 x 2 x 5 = 222 x 10 = 2220
2. 282 x 5 = 280 + 2 x 5 = 280 x 10 = 2800
3. 4 x 8 x 7 x 25 = (8 x 7) x (25 x4) = 56 x 100 = 5600
4. 25 x 8 x 9 = (25 x 4) x (4 x 9) = 100 x 36 = 3600
a.Đúng b.Sai
Tính nhanh: (25 x 4 + 27 x 5) x (100 - 25 x 4)
(25* 4+ 27* 5 )* (100-25 *4 )
=275 *(25*4 ) -100
=275* 0
=0
Lời giải:
$(25\times 4+27\times 5)\times (100-25\times 4)=(25\times 4+27\times 5)\times 0$
$=0$
( 25 x 4 + 27 x 5 ) x ( 100 - 25 x 4 )
= ( 25 x ( 4 + 5 )) x ( 100 - 100 )
= ( 25 x 9 ) x 0
= 225 x 0
= 0
học tốt nha
100 x 25 + 85 - 25 x 10 + 123 = ???
100 x 25 + 85 - 25 x 10 + 123
= 2500 + 85 - 250 + 123
= 2458
hok tốt .
100 x 25 + 85 - 25 x 10 + 123 =
2500+85-250+123
2585-250+123
2335+123
2458
100 x 25 + 85 - 25 x 10 + 123 = ???
2500 + 85 - 250 + 123 =
2585 - 250 + 123 = 2458
Giá trị của x trong: \(\dfrac{x}{100}=\dfrac{3}{25}\) là:
a. 3 b.25 c. 12 d. 100
bạn chọn đáp án c.12
x/100=3/25
vì x =12 vì : 4 =3
vì 100 : 4 = 25
Lời giải:
$\frac{x}{100}=\frac{3}{25}$
$x=\frac{3}{25}\times 100=12$
Đáp án C.
câu C:12 là đúng nhé em ! Chúc em kì thi tới thi tốt
tim X
a,( 25 * 12 - X - 25 ) : 25 = 4
b,180 - ( X + 15 ) : X * 20 = 100
c,125 + ( X - 25 ) * 5 + X = 150
d,X : 8 * 32 + X: 3 * 18 - X: 5 *10 = 120
d, X/8*32+X/3*18-X/5*10=120
X*32/8+X*18/3-X*10/5=120
32X/8+18X/3-10X/5=120
4X+6X-2X=120
8X=120
X=120/8
X=15
a, ( 25 * 12 - X - 25 ) : 25 = 4
( 25 * 12 - x - 25 ) = 4 * 25
( 25 * 12 - x - 25 ) = 100
300 - x - 25 = 100
300 - x = 100 + 25
300 - x = 125
x = 300 - 125
x = 175
120 + ( 50 +x) =180
140 + (20- x )=150
100 - ( 25+ x )=40
130 - (100 + x) =25
174 -( 143 +x ) =22
a)50 + x = 180 - 120
50 + x = 60
x = 60-50
x = 10
b)20-x = 150-140
20-x = 10
x = 20-10
x = 10
c) 25+x = 100-40
25+x=60
x= 60-25
x=35
d) 100+x =130-25
100+x = 105
x = 105-100
x = 5
e) 143+x = 174-22
143+x = 152
x = 152-143
x = 9
ỦNG HỘ MK NHÁ
120 + ( 50 + x ) = 180
50 + x = 180 - 120
50 + x = 60
x = 60 - 50
x = 10
140 + ( 20 - x ) = 150
20 - x = 150 - 140
20 - x = 10
x = 20 - 10
x = 10
100 - ( 25 + x ) = 40
25 + x = 100 - 40
25 + x = 60
x = 60 - 25
x = 35
130 - ( 100 + x ) = 25
100 + x = 130 - 25
100 + x = 105
x = 105 - 100
x = 5
174 - ( 143 + x ) = 22
143 + x = 174 - 22
143 + x = 152
x = 152 - 143
x = 9
k mk nha
Thanks nhìu
\(120+\left(50+x\right)=180\)
\(\Rightarrow50+x=180-120\)
\(\Rightarrow50+x=60\)
\(\Rightarrow x=60-50=10\)
Vậy x = 10
\(140+\left(20-x\right)=150\)
\(\Rightarrow20-x=150-140\)
\(\Rightarrow20-x=10\)
\(\Rightarrow x=20-10=10\)
Vậy x =x10
\(100-\left(25+x\right)=40\)
\(\Rightarrow25+x=100-40\)
\(\Rightarrow25+x=60\)
\(\Rightarrow x=60-25=35\)
Vậy x = 35
\(130-\left(100+x\right)=25\)
\(\Rightarrow100+x=130-25\)
\(\Rightarrow100+x=105\)
\(\Rightarrow x=105-100=5\)
Vậy x = 5
\(174-\left(143+x\right)=22\)
\(\Rightarrow143+x=174-22\)
\(\Rightarrow143+x=152\)
\(\Rightarrow x=152-143=9\)
Vậy x = 9