Question

Galera me ajudem a responder

Answer 1

a) 8b - 3 = 5b + 6
8b - 5b = 6 + 3
3b = 9
b = 9/3
b = 3

b) 2y + 9 = 10 - y
2y + y = 10 - 9
3y = 1
y = 1/3

c) z - 7 = 1 + 2z
z - 2z = 1 + 7
-z = 8
z = -8

d) 5 + 4a = a - 3
4a - a = -3 - 5
3a = -8
a = -8/3..