Tìm x, biết: a) x + 2 1/3 = 2 5/6 b) x + 8 2/3 = 3 1/3

* Hướng dẫn giải

$a)x+2\frac{1}{3}=2\frac{5}{6}\Rightarrow x=2\frac{5}{6}-2\frac{1}{3}=\frac{1}{2}.$

$b)x+8\frac{2}{3}=3\frac{1}{3}\Rightarrow x=3\frac{1}{3}-8\frac{2}{3}=\frac{10}{3}-\frac{26}{3}=-\frac{16}{3}.$