Question

x/2-(x-1/2)=x-2 Preciso rápido,por favor!

Answer 1

$\frac{x}{2} + \frac{x-1}{2} = x - 2$

MMC = 2

x + x - 1 = 2x - 4

2x - 2x = -4 + 1

0 ≠ -3

S = ∅

Mas se for:

$\frac{x}{2} - ( x - \frac{1}{2} = x - 2$

$\frac{x}{2} - (\frac{2x - 1}{2} = x - 2$

$\frac{x}{2} - \frac{2x}{2} + \frac{1}{2} = x - 2$

x - 2x + 1 2x - 4

-x - 2x = -4 - 1

-3x = -5 ⇒ [aqui multiplicamos por (-1)]

3x = 5

x = 5/3

S = {5/3}