2-(1-x)= 1 1 д) 2x x = 2 4 2

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

Ответ: $$1\frac{3}{4}x$$