Question

resolva as equações, considerando U= Q
A) 7 (y - 1) - 4 (1 + 2y)= y-11
B) 20-5 (1 - 2m) +6 (m - 1)= 3 (5m -2)
C) 1 - (2z - 3) + 6= 3 (z + 4)

Answer 1

Resposta:

$7y - 7 - 4 - 8y = y - 1 \\ 7y - 8y - y = - 1 + 11 \\ - 2y = 10( - 1) \\ 2y = - 10 \\ y = \frac{ - 10}{2} \\ y = - 5$

$20 - 5 + 10m + 6m - 6 = 15m - 6 \\ 16m - 15m = - 6 - 9 \\ m = - 15$

$2z + 3 + 6 = 3z + 12 \\ 2z - 3z = 12 - 9 \\ - z = 3( - 1) \\ z = - 3$