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March 4, 2015

March 4, 2015

Posted by **Jennifer** on Wednesday, May 30, 2012 at 10:04pm.

7r - 5s = 36 and 5r + 7s = 68

- Mat 116 -
**Reiny**, Wednesday, May 30, 2012 at 11:43pmfirst by 7 -----> 49r - 35s = 252

second by 5 --> 25r + 35s = 340

add them

74r = 592

r = 8

sub back into one of the original equations to find s

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