4x+y=-1 and 4x-3y=7

4x+y=-1 and 4x-3y=7: Here are a pair of simultaneous equations to solve for homework. This one is very easy because the first terms 4x are the same in both equations. Therefore, you simply begin the subtraction process eliminating the "x" terms.

Now it is just a simple matter of solving for y.

Substitute the value for y into 4x+y=-1 to solve for x as shown above.