8,75 x x + 1,25 x x = 20
= { 8,75 + 1,25 } x x = 20
= 10 x x = 20
= 20 : 10
= 2
8,75 x x + 1,25 x x = 20
x*(8,75+1,25)=20
x*10=20
x=2
Đề bạn nên ghi rõ ra!
\(8,75x+1,25x=20\)
\(8,75x+1,25x=20\)
\(x\left(8,75+1,25\right)=20\)
\(x.10=20\)
<=>\(x=\frac{20}{10}=2\)
8,75 * x + 1,25 * x = 20
( 8,75 + 1, 25 ) * x = 20
10 * x = 20
x = 20 : 10
x = 2
8,75 x X + 1,25 x X = 20
X x 8,75 + X x 1,25 = 20
X x ( 8,75 + 1,25 ) = 20
X x 10 = 20
X = 20 : 10
X = 2
8,75 x x + 1,25 x x =20
=(8,75 + 1,25 ) x x =20
=10 x x = 20
=20:10
=2