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