SOLUTION: solve by the addition method Please help! 5x-2y=-1 7y=24-3x

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Question 370447: solve by the addition method
Please help!
5x-2y=-1
7y=24-3x

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
5x-2y=-1 multiply by 7
7y=24-3x multiply by 2 & add.
35x-14y=-7
6x+14y=48
----------------
41x=41
x=41/41=1 ans. for x.
5*1-2y=-1
5-2y=-1
-2y=-1-5
-2y=-6
y=-6/-2=3 ans. for y.
Proof:
7*3=24-3*1
21=24-3
21=21