Question

if 2x + y = 12 and x + 2y = -6, then find the value of 2x + 2y

Answer 1

2x + y = 12
2x = 12 - y

x + 2y = -6
2y = -6 - x

2x + 2y
12 - y + (-6) - x
12 + (- 6) - y - x
12 - 6 - y - x
6 - y - x

Answer: - x - y + 6