-1/2+1/3:x=1
=>1/3x=3/2
=> x=2/9
1/3:x=1+1/2
1/3:x=3/2
x=1/3:3/2
x=2/9
à quên, t làm lộn :)
\(\frac{-1}{2}+\frac{1}{3}:x=1\)
\(\frac{1}{3}:x=1-\frac{-1}{2}\)
\(\frac{1}{3}:x=\frac{3}{2}\)
\(x=\frac{3}{2}.\frac{1}{3}\)
\(x=\frac{1}{2}\)
Vậy \(x=\frac{1}{2}\).