Question

Gente me ajudem por favor

Answer 1

Resposta:

a)

$60 + 3x = 180 \\ 3x = 180 - 60 \\ x = \frac{120}{3} \\ x = 40$

b)

$3x + 2x = 90 \\ 5x = 90 \\ x = \frac{90}{5} \\ x = 18$

c)

$2x + 10 + x = 90 \\ 3x = 80 \\ x = \frac{80}{3}$

e)

$3x - 30 + x + 10 = 180 \\ 4x = 200 \\ x = 50$