Question

Qual a Resposta .
12+(3x+6).(-7)-5=70

Answer 1

12+(3x+6).(-7)-5=70

12 + -21x - 42 - 5 = 70

- 21x = 70 + 42 + 5 - 12

- 21X = 105(-1)

21X =- 105

X = - 105/21

X = - 5