\(a,\left(2x-7\right)-135=0\)
\(\Rightarrow\)\(2x-7=0+135\)
\(\Rightarrow\)\(2x-7=135\)
\(\Rightarrow\)\(2x=135+7\)
\(\Rightarrow2x=142\)
\(\Rightarrow x=142:2\)
\(\Rightarrow x=71\)
Vậy \(x=71.\)
\(b,122+\left(37-3x\right)=0\)
\(\Rightarrow\)\(37-3x=0-122\)
\(\Rightarrow\)\(37-3x=-122\)
\(\Rightarrow\)\(3x=-37-\left(-122\right)\)
\(\Rightarrow3x=159\)
\(\Rightarrow x=159:3\)
\(\Rightarrow x=53\)
Vậy \(x=53.\)
