SOLUTION: Solve using the elimination method 7r-3s=15 3r+7s=81

SOLUTION: Solve using the elimination method 7r-3s=15 3r+7s=81

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Question 284433: Solve using the elimination method
7r-3s=15
3r+7s=81
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
1.
2.
Multiply eq. 1 by 7 and eq. 2 by 3 and add.

Then from eq. 1,

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