Question

Tìm x: X ×0,3+ X ×0,1+ X ×0,6+X =8. Mọi người làm giúp ạ

Answer 1

\(x\cdot0,3+x\cdot0,1+x\cdot0,6+x=8\)

=>\(x\left(0,3+0,1+0,6+1\right)=8\)

=>2x=8

=>x=8/2=4

Answer 2

\(x\times0,3+x\times0,1+x\times0,6+x=8\\x\times(0,3+0,1+0,6+1)=8\\x\times(0,4+0,6+1)=8\\x\times(1+1)=8\\x\times2=8\\x=8:2\\x=4\)