SOLUTION: 7x+y=20 3x+2y=18

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Question 126855:

7x+y=20 3x+2y=18
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
3x+2y=18 now multiply the other equation by -2 & add them.
-14x-2y=-40
----------------------------
-11x=-22
x=-22/-11
x=2 answer.
3*2+2y=18
6+2y=18
2y=18-6
2y=12
y=12/6
y=6 answer.
7*2+6=20
14=6=20
20=20