If you have a problem like: 4x+2y=20 2x+2y=16 You would subtract 4x-2y=20 -2x+2y=16 You would get the new problum 2x=4 You now want to divide the 2 on both sides to solve for x x=2
Now that you've solved for X you want to solve for y. So use substitution to solve for y. You would want to substatute the x for the 2 in either of the problums. I'll use the first one. 4(2)+2y=20
You first want to multiply te 4(2) you would get a new problum. 8+2y=20
Now you want to subtract the 8 on both sides. 2y=12
The last step to solve for y is to divide the 2 on both sides. Y=6
