[DFG]

The Yahoo solution makes this problem much harder than it really is.

1) Multiply the first equation by -3 and leave the second equation alone to get the following:

-15X + 3Y = -15
7X - 3Y = -1

2) Add these two equations together to get:

-8X = -16

3) Solve for X:

X = 2

4) Substitute X = 2 into either equation and solve for Y:

(7 x 2) - 3Y = -1
Y = 5

[Bob]

The Yahoo solution makes this problem much harder than it really is.

I disagree - IMHO, the multiple correct answers to the questions make the problems harder to grasp than they need to be.

The second question is even more confusing since the first three answers listed will all work.