Question

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

Answer 1

[2 (x-5) + 4 (1-2x] /20 = 5 (3 - x)/20
2x - 10 + 4 - 8x = 15- 5x
-6x -6 /15 -5x
-6x - 6 = 15 - 5x

-x = 21
x = -21

espero ter ajudado