Question

Resolvendo a equação 2(x-4) + 5(x +12) = 14(x + 3 - 2x) - 54 *

a) -64/21
b) -64/7
c) 52/21
d) 52/7
e) 64/14

Answer 1

Resposta:

a

Explicação passo-a-passo:

2(x-4) + 5(x +12) = 14(x + 3 - 2x) - 54

2x - 8 + 5x + 60 = 14x + 42 - 28x - 54

7x + 52 = -14x - 12

7x + 14x = -12 - 52

21x = -64

x = -64/21

x = -64

-7

x = -64/-7