Question

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

Answer 1

(x-5)+(1-2x)=(3-x)                 mmc = 20
  10      5        4

2(x-5)+4(1-2x)= 5(3-x) 
2x - 10 + 4 - 8x = 15 - 5x
2x-8x+7x = 15-4+10
  - x = 21(-1)

x = - 21

Answer 2

$\frac{x-5}{10}+ \frac{1-2x}{5}= \frac{3-x}{4}$ ---mmc(10,5,4)=20

$2(x-5)+4(1-2x) = 5(3-x)$

2x-10 +4 - 8x = 15-5x
2x - 8x + 5x = 15 +10 - 4
 - x = 21 -----> x = -21