e) 3x-2x-1= 4 2 1 3 3 x x = 5 4 5

e) $$3\frac{3}{5}x - \left(2\frac{1}{2}x - 1\frac{3}{5}x\right) = 3\frac{3}{5}x - 2\frac{1}{2}x + 1\frac{3}{5}x = 3\frac{6}{10}x + 1\frac{6}{10}x - 2\frac{5}{10}x = (3+1-2 + \frac{6+6-5}{10})x = 2\frac{7}{10}x$$

Ответ: $$2\frac{7}{10}x$$