\(2\frac{1}{2}-x=1\frac{1}{2}\)
\(x=2\frac{1}{2}-1\frac{1}{2}\)
\(x=1\)
\(2\frac{1}{2}-x=1\frac{1}{2}\)
\(\frac{5}{4}-x=\frac{3}{2}\)
\(\frac{5}{4}-\frac{3}{2}=x\)
\(\frac{5}{4}-\frac{6}{4}=x\)
=> x=\(\frac{-1}{4}\)
\(2\frac{1}{2}-x=1\frac{1}{2}\)
\(x=2\frac{1}{2}-1\frac{1}{2}\)
\(x=1\)
Vậy x = 1