Asked by jackie
solve by elimination
2r - 9s = -17
9r + 2s = 51
2r - 9s = -17
9r + 2s = 51
Answers
Answered by
Damon
18 r - 81 s = - 153
18 r + 4 s = 102
--------------------
0 r - 85 s = - 255
s = 255/85 = 3
now go back and get r
18 r + 4 s = 102
--------------------
0 r - 85 s = - 255
s = 255/85 = 3
now go back and get r
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