posted by Trina .
How o Isolve by using the elimination method.
5x + 5y= -7
7x - 2y= 17
College as the School Subject will NOT get you the correct teacher. Please name it carefully.
Elimination involves multiplying one or more equations to either eliminate the x's or y's.
Multiplying the top equation by 2 and the bottom equation by 5 will eliminate the y's.
Now add the equations together.
Divide both sides by 45 to solve by x.
Now plug that number into any of the equations to figure out what y is. Post your answer if you'd like it checked.