Đề bài

Tìm x, biết:

a)$\frac{2}{9}:x + \frac{5}{6} = 0,5;$                        

b)$\frac{3}{4} - \left( {x - \frac{2}{3}} \right) = 1\frac{1}{3};$

c)$1\frac{1}{4}:\left( {x - \frac{2}{3}} \right) = 0,75;$                

d)$\left( { - \frac{5}{6}x + \frac{5}{4}} \right):\frac{3}{2} = \frac{4}{3}$.