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hali12
PLEASE HELP IM GONNA FAIL MATH Explain the procedure when using the elimination method to get rid of one of the variables
So explain how to do elimination
I'll give u a medal if u just pls give methe anwser
you must try to get one of the variables to equal 0
do you need an example?
For example if you had 4a + 2b = 15 2a + 2b = 7 you would need to get the B's to equal zero in this case
if your dealing with systems of equations: http://www.wyzant.com/Help/Math/Precalculus/Systems_Of_Equations/Elimination_Method.aspx
so you would (2a + 2b = 7) *-1 and it would be this: -2a - 2b = -7
the B's now cancel out. 4a - -2a = 6a = 8 <---- 15 - 7 = 8
the answer would actually be 2a 4a + -2a = 2a = 22<---- 15 + 7 = 22. 2a = 22 then divide 2 from both sides to get A = 11. Then insert 11 into both equations and solve to get y