Question

Giải PT sau:

\(3.\left(2,2-0,3x\right)=2,6+\left(0,1x-4\right)\)

Answer 1

\(\Leftrightarrow6,6-0,9x=2,6+0,1x-4\)

\(\Leftrightarrow-0,9x-0,1x=2,6-4-6,6\)

\(\Leftrightarrow-1x=-8\)

\(\Leftrightarrow x=8\)

Vậy \(S=\left\{8\right\}\)

Answer 2

\(PT.\Rightarrow\) \(6,6-0,9x-2,6-0,1x+4=0.\\ \Leftrightarrow-x=8.\Leftrightarrow x=8.\)

Answer 3

=>6,6-0,9x=2,6+0,1x-4

=>x=8