THE CORRECT ANSWER IS (A). THE EASIEST WAY TO SOLVE THE PROBLEM IS...
15. The correct answer is (A). The easiest way to solve the problem is by the addition-
subtraction method. Multiply the first equation by 3, the second by 2, then add:
9x
1
6y
5
15a
1
3b
8x
2
6y
5
2a
1
14b
17x
1
0y
5
17a
1
17b
x
5
a
1
b