SOLUTION: Add the two equations 4x+y=7 and x-y=8

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Question 754709: Add the two equations 4x+y=7 and x-y=8
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
This is not tricky.
4x+y+x-y=7+8
and you then simplify.