Question

Answer 1

\(\left(x-47\right)-115=0\)
\(x-47=0+115\)
\(x-47=115\)
\(x=115+47\)
\(x=162\)
Vậy \(x=162\)
\(-------\)
\(\left(x-28\right)-213=0\)
\(x-28=0+213\)
\(x-28=213\)
\(x=213+28\)
\(x=241\)
Vậy \(x=241\)
\(--------\)
\(\left(x-35\right)-120=0\)
\(x-35=0+120\)
\(x-25=120\)
\(x=120+35\)
\(x=155\)
Vậy \(x=155\)
\(-------\)
\(156-\left(x+61\right)=82\)
\(x+61=156-82\)
\(x+61=74\)
\(x=74-61\)
\(x=13\)
Vậy \(x=13\)

Answer 2

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Answer 3

\(\left(x+30\right)-75=125\)
\(x+30=125+75\)
\(x+30=200\)
\(x=200-30\)
\(x=170\)
Vậy \(x=170\)
\(-------\)
\(124+\left(118-x\right)=217\)
\(118-x=217-124\)
\(118-x=93\)
\(x=118-93\)
\(x=25\)
Vậy \(x=25\)
\(---------\)
\(315+\left(146-x\right)=401\)
\(146-x=401-315\)
\(146-x=86\)
\(x=146-86\)
\(x=60\)
Vậy \(x=60\)