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OpenStudy (anonymous):
5x+3y=-13 7x-2y=11
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OpenStudy (saifoo.khan):
x = 7/31 y = -146/31
OpenStudy (angela210793):
5x+3y=-13(*2) 10x+6y=-26 31x=7 7x-2y=11(*3) 21x-6y=33(add both sides) x=7/31 5*7/31+3y=-13 3y=-13- 35/31 y=-438/93=
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