Question

4) Resolva:
a) 4x + 2 = 38
b) 9x = 6x + 12
c) 5x – 1 = 3x + 11
d) 2x + 8 = x + 13

Answer 1

Resposta:

a)9

b)3

c)6

d)5

Explicação passo a passo:

Alternativa :

4x+2=38

4x=38-2

4x=36

x=36/4

x=9

Alternativa B:

9x=6x+12

9x-6x=12

3x=12

x=12/4

x=3

Alternativa C:

5x-1=3x+11

5x-3x=11+1

2x=12

x=12/2

x=6

Alternativa D:

2x+8=13-x

2x-x=13-8

x=5