\(8,75\cdot x+1,25\cdot x=20\)
\(\left(8,75+1,25\right)\cdot x=20\)
\(10\cdot x=20\)
\(x=20:10\)
\(x=2\)
=>\(x\)x(8,75+1,25)=20
=>\(x\)x10=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
\(x\)= 20 : 10
\(x\)= 2
8,75 x X + 1,25 x X = 20
X x ( 8,75 x 1,25 ) = 20
X x 10 = 20
X = 20 : 10
X = 2
k mình nha
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
(8,75+1,25).x = 20
10. x = 20
x = 20:10
x = 10
\(8,75.x+1,25.x=20\)
\(\Rightarrow x\left(8,75+1,25\right)=20\)
\(\Rightarrow x.10=20\)
\(\Rightarrow x=2\)
Vậy..............
a. x+8,75=8,75;x=0 vì0+8,75=8,75x+8,75=8,75;x=0vì0+8,75=8,75
b. 34+x=1216;x=0 vì1216=34