Question

gente qual er a resposta dessa equaçao 12+[3x+6] . [-7]-5=70

Answer 1

12 + (3x+6) * (-7) - 5 = 70
12 - 21x - 42 - 5 = 70
-21x = 70 - 12 + 42 +5
-21x = 105 *(-1)
21x = -105
x = $\frac{-105}{21}$
x = -5