Question

preciso de ajuda!!!!!!!!!!!!!​

Answer 1

Resposta:

a) 4x + 2 = 38

$4x + 2 = 38 \\ 4x = 38 - 2 \\ 4x = 36 \\ x = \frac{36}{4} \\ x = 9$

b) 9x = 6x + 12

$9x = 6x + 12 \\ 9x - 6x = 12 \\ 3x = 12 \\ x = \frac{12}{3} \\ x = 4$

c) 5x - 1 = 3x + 11

$5x - 1 = 3x + 11 \\ 5x - 1 - 3x = 11 \\ 2x = 11 + 1 \\ 2x = 12 \\ x = \frac{12}{2} \\ x = 6$

d) 2x + 8 = x + 13

$2x + 8 = x + 13 \\ 2x - x + 8 = 13 \\ x = 13 + 8 \\ x = 21$