Question

Al resolver la ecuación:
3.(x - 2) + 2. (X +7)
= 23
la solución es x =
a. 2
b. 3
Cc.-3
d.-2

Answer 1

$3(x - 2) + 2(x + 7) = 23 \\ 3x - 6 + 2x + 14 = 23 \\ 5x + 8 = 23 \\ 5x = 23 - 8 \\ 5x = 15 \\ x = 15 \div 5 \\ x = 3$