Question

a) 4 - x - 1/2 = x + 1/2 + 1

Answer 1

 4 - x - 1/2 = x + 1/2 + 1
 4 - x - 1 = x + 1 + 1   mmc = 2            2         2

8 - 2x - 1 = 2x +1 + 2

-2x-2x = 1+2+1-8

-4x = -4(-1) ==> 4x = 4 ==> x = 1