x-4/5=5/2x4/15
x-4/5=2/3
x=2/3+4/5
x=8/15
(dấu / là dấu bằng giữa tử và mẫu)
\(x-\frac{4}{5}=\frac{5}{2}x\frac{4}{15}\)
\(x-\frac{4}{5}=\frac{2}{3}\)
\(x=\frac{2}{3}+\frac{4}{5}\)
\(x=\frac{22}{15}\)
nha bn
\(x-\frac{4}{5}=\frac{5}{2}\times\frac{4}{15}\)
\(x-\frac{4}{5}=\frac{20}{30}\)
\(x-\frac{4}{5}=\frac{2}{3}\)
\(x=\frac{2}{3}+\frac{4}{5}\)
\(x=\frac{22}{15}\)