Tìm X, biết: a) x + (5/9) = (3/2)

* Hướng dẫn giải

a) X + $\frac{5}{9}$ = $\frac{3}{2}$ $\Rightarrow$ X = $\frac{3}{2}-\frac{5}{9}=\frac{27}{18}-\frac{10}{18}=\frac{17}{18}$.

b) X + $1\frac{1}{2} = 3\frac{3}{4}$ $\Rightarrow$ X = $3\frac{3}{4}-1\frac{1}{2}=\frac{15}{4}-\frac{3}{2}=\frac{9}{4}.$