Question

6) Resolva as equações: a) 3x + 5 = 20 b) x + 8 = 12 c) 5x = 30 d) 4x + 2x – 3 = 45

Answer 1

Resposta:

a)3x+5=20

x=15/3

x=5

b)x+8=12

x=4

c)5x=30

x=6

d)4x+2x-3=45

6x=48

x=8