Question

(×-5)/10+(1-2×)/5=(3-×)/4

Answer 1

Resolução:

$\frac{(x - 5)}{10} + \frac{(1 - 2x)}{5} = \frac{(3 - x)}{4}$

$mmc = 20$

$\frac{(2x - 10)}{20} + \frac{(4 - 8x)}{20} = \frac{(15 - 5x)}{20}$

$2x - 10 + 4 - 8x = 15 - 5x$

$2x - 8x + 5x = 15 + 10 - 4$

$- 6x + 5x = 25 - 4$

$- x = 21 \: \times ( - 1)$

$x = - 21$

Answer 2

(× - 5)/10 + (1 - 2×)/5 = (3 - ×)/4           mmc (10,5,4) = 20

2.(x - 5)/20 + 4.(1 -2x)/20 = 5.(3 - x)/20

2x - 10/20 + 4 - 8x/20 = 15 - 5x/20         Efetuamos só com os numeradores

2x - 10 + 4 - 8x = 15 - 5x    

- 6x - 6 = 15 - 5x

- 6x + 5x = 15 + 6

- x = 21

x = 21/-1

x = -21