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8,75 x x + 1,25 x x = 20
(8,75 + 1,25) x x = 20
10 x x = 20
x = 20 : 10
x = 2
![](https://rs.olm.vn/images/avt/0.png?1311)
8,75 x x + 1,25 x x = 20
(8,75 + 1,25) x x = 20
10 x x = 20
x = 20 : 10
x = 2
![](https://rs.olm.vn/images/avt/0.png?1311)
tham khảo
8,75 * x + 1,25 * x = 20
<=>10*x=20
<=>x=20 : 10
<=> x=2
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\left(8,75+1,25\right)\times x=20\\ 10\times x=20\\ x=20:10\\ x=2\)
8,75 × x + 1,25 × x = 20
=X x(8,75+1,25)=20
X x 10=20
X=20:10
X=2
![](https://rs.olm.vn/images/avt/0.png?1311)
8,75 × x + 1,25 × x = 20
=>x*(8,75+1,25)=20
=>x*10=20=>x=20:10=2
8,75 × x + 1,25 × x = 20
( 8,75 + 1,25) x X = 20
10 x X = 20
X=20 : 10
X=2
![](https://rs.olm.vn/images/avt/0.png?1311)
8,75xX+1,25xX=20
{8,75+1,25}xX=20
10xX=20
X=20:10
X=2
đây nha e
![](https://rs.olm.vn/images/avt/0.png?1311)
( 8,75 + 1,25 ) + x = 20
10 + x = 20
x = 20 - 10
x = 10
\(8,75\times x+1,25\times x=20\\ \left(8,75+1,25\right)\times x=20\\ 10\times x=20\\ x=20:10\\ x=2\)