Question

resolva as equações:
a) 9w - 6/2 = 8 - w
b) x/4 - 3 = 4 - x/3

Answer 1

a) 9w - 6/2 = 8 - w
    9w - 3 = 8 - w
    9w + w = 8 + 3
    10 w = 11
    w = 11/10

b) x/4 - 3 = 4 - x/3
    (x - 12) / 4 = (12 - x) / 3
    (x - 12) * 3 = (12 - x) * 4
    3x - 36 = 48 - 4x
    3x + 4x = 48 + 36
    7x = 84
    x = 84/7
    x = 12