Question

(x-5)/10+(1-2x)/5=(3-x)/4

Answer 1

(x- 5) / 10 + (1 - 2x) / 5 = (3 - x) / 4
MMC entre 10 e 5 = 10
(x - 5) / 10 + (2 - 4x) / 10 = (3 - x) / 4
(x - 5 + 2 - 4x) / 10 = (3 - x) / 4
(-3x - 3) / 10 = (3 - x) / 4
Multiplicando cruzado:
- 12x - 12 = 30 - 10x
-2x = 42
x = -21

Answer 2

(x -5)/10 + (1 - 2x)/5 = (3 - x)/4
MMC de 10, 5 e 4 = 20
2(x - 5) + 4(1 - 2x) = 5(3 - x)
2x - 10 + 4 - 8x = 15 - 5x
2x - 8x + 5x = 15 + 10 - 4
|- x = 21| . (-1)
x = - 21