Question

9-25=(7-x)-(25+7)

Answer 1

\(9-25=7-x-25-7\)

\(-14=x-25\)

\(x=-25+14\)

\(x=-11\)

Answer 2

\(9-25=\left(7-x\right)-\left(25+7\right)\)

\(\Leftrightarrow-16=7-x-32\)

\(\Leftrightarrow x=16+7-32\)

\(\Leftrightarrow x=-9\)