![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a, x* 7,25 = 72,50
x = 72,50 : 7,25
x = 10
b, 470,04 : x = 24
x = 470,04 : 24
x = 19,585
c, 32,68 *x = 99,3472
x = 99,3472 : 32,68
x = 3,04
d, 625,17 : x = 6,2517
x = 625,17 : 6,2517
x = 100
![](https://rs.olm.vn/images/avt/0.png?1311)
a)470,04/x*0,01=0,24
470,04/x=0,24/0,01
470,04/x=24
x=470,04/24
x=19,585
b)x*7,25+27,5=100
x*7,25=100-27,5
x*7,25=72,5
x=72,5/7,25
x=10
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 7,25×6,93+7,25×2,07+7,25×1
=7,25×(6,93+2,07+1)
=7,25×10
=72,5
b) 24,8:0,5+24,8×8
=24,8×2+24,8×8
=24,8×(2+8)
=24,8×10
=248
![](https://rs.olm.vn/images/avt/0.png?1311)
7,25 x b - b : 4 = 14,7
= 7,25 x b - b . \(\frac{1}{4}\)= 14,7
= b x ( 7,25 - \(\frac{1}{4}\)) = 14,7
= b x 7 = 14,7
b = 14,7 : 7
b = 2,1
7,25 x b - b : 4 = 14,7
\(\Rightarrow\)7,25 x b - b x \(\frac{1}{4}\)= 14,7
\(\Rightarrow\)7,25 x b - b x 0,25 = 14,7
\(\Rightarrow\)b x ( 7,25 - 0,25 ) = 14,7
\(\Rightarrow\)b x 7 = 14,7
\(\Rightarrow b=14,7:7\)
\(\Rightarrow b=2,1\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\Leftrightarrow x\times\left(7,25+27,5\right)=30\)
\(\Leftrightarrow x=\dfrac{30}{34,75}=\dfrac{120}{139}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
b)
x – 5,7 = 7,25
x = 7,25 + 5,7
x = 12,95
x x 1,4 = 5,6
x = 5,6 : 1,4
x = 4.
x + 14,28 = 12,5 x 3,6
x + 14,28 = 45
x = 45 – 14,28
x = 30,72
x : 2,75 = 37,6 – 18,62
x : 2,75 = 18,98
x = 18,98 x 2,75
x = 52,195.
![](https://rs.olm.vn/images/avt/0.png?1311)
X*7.25=77.50
X=77.5:7.25
X=\(\frac{310}{29}\)
32.68*X=99.3472
X=99.3472:32.68
X=3.04
470.04:X=2.4
X=470.04:2.4
X=195.85
625.17:X=6.2517
X=625.17:6.2517
X=100