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OpenStudy (ledah):
Solve by substitution x + 3y = -5 2x - y = 18
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OpenStudy (anonymous):
x=-5-3y 2x-y=18 substitute with x 2(-5-3y)-y=18 -10-6y-y=18 -7y=18+10 -7y=28 y=-4 . Now go to any of the 2 equation and sbs. y in it and get x
OpenStudy (anonymous):
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