Question

Me ajudem... Por favor!!!

Answer 1

a) x/2 - 7 = x/4 + 5
2x/4 - 28/4 = x/4 + 20/4
2x - x = 20 + 28
3x = 48
x = 48/3
x = 16

b) 2x - 1/2 = 5x + 1/3
12x/6 - 3/6 = 30x/6 + 2/6
12x - 30x = 2 + 3
-18x = 5
x = -5/18

c) x - 1 = 5 - x/4
4x/4 - 4/4 = 20/4 - x/4
4x + x = 20 + 4
5x = 24
x = 24/5

d) x/6 + x/3 = 18 - x/4
2x/12 + 4x/12 = 216/12 - 3x/12
2x + 4x + 3x = 216
9x = 216
x = 216/9 = 72/3 = 24