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OpenStudy (anonymous):
3x-y=15 x+2y=-2 use
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OpenStudy (anonymous):
use... substitution?
OpenStudy (anonymous):
-y = 15 -3x y = 3x-15 x+2(3x-15) = -2 x+ 6x -30 = -2 7x = 28 x = 4 3(4) - y = 15 12 - y = 15 -y = 3 y = -3
OpenStudy (anonymous):
is this the answer
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