Question

Determine o valor de x na equação 3 – 2 * (x + 3) = x – 18 é: *

a) 2

b) 3

c) 4

d) 5

e) 6
​

Answer 1

$3-2.(x+3)=x-18\\3-2x-6=x-18\\-2x-x=-18-3+6\\-3x=-15\\3x=15$

$x=\frac{15}{3}$

$x=5$