SOLUTION: 7r - 8s =8 8r + 7s =106 The solution is what ordered pair? ( ?,?)

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Question 324925: 7r - 8s =8
8r + 7s =106
The solution is what ordered pair? ( ?,?)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.7r+-+8s+=8
2.8r+%2B+7s+=106
From eq. 1,
7r-8s=8
7r=8s%2B8
r=%288s%2B8%29%2F7
Substitute into eq. 2,
%288%288s%2B8%29%29%2F7%2B7s=106
8%288s%2B8%29%2B49s=742
64s%2B64%2B49s=742
113s=678
highlight%28s=6%29
.
.
.
Then from above,
r=%288%286%29%2B8%29%2F7=56%2F7
highlight%28r=8%29