Question

Which equation is the result of adding these two equations?

2x + 3y = -5
7x - 3y = 9

[A] 5x = 4 [B] 9x = 4
[C] -5x = -14 [D] 9x = 14
[C] -5x = -14

Answer 1

Adding the equations :

2x + 7x = - 5 + 9

9x = 4

Thus the answer is [B]