SOLUTION: Chapter:The Elimination Method 2x+4y=40 7x-3y=4

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Question 74381: Chapter:The Elimination Method
2x+4y=40
7x-3y=4
Answer by algebrapro18(249) About Me  (Show Source):
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2x+4y=40
7x-3y=4
3(2x+4y=40)
6x+12y=120
4(7x-3y=4)
28x-12y= 16
6x+12y=120
+28x-12y= 16
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34x = 136
x = 4
2(4) + 4y = 40
8 + 4y = 40
4y = 32
y = 8