Đề bài

Tìm x, biết:

a)$- \frac{3}{5}.x = \frac{{12}}{{25}};$

b)$\frac{3}{5}x - \frac{3}{4} =  - 1\frac{1}{2};$

c)$\frac{2}{5} + \frac{3}{5}:x = 0,5;$

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

e)$2\frac{2}{{15}}:\left( {\frac{1}{3} - 5x} \right) =  - 2\frac{2}{5}$

g)${x^2} + \frac{1}{9} = \frac{5}{3}:3.$