SOLUTION: Find the solution set for one of the following systems of equations, try to use the elimination method:
1) -7y + 2x = 15 and 4y - 2x = -9
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1) -7y + 2x = 15 and 4y - 2x = -9
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Question 741117: Find the solution set for one of the following systems of equations, try to use the elimination method:
1) -7y + 2x = 15 and 4y - 2x = -9
You can put this solution on YOUR website! -7y + 2x = 15
4y - 2x = -9
_______________ add these as they are and the x's cancel out; you get:
-3y = 6
y = -2
Substitute this back into either of the equation to find x:
Using the first one:
-7y + 2x = 15 becomes
-7(-2) + 2x = 15
14 + 2x = 15
2x = 1
x = 1/2
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