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OpenStudy (anonymous):
Use the substitution method to solve the system of equations. Enter your answer as an ordered pair. x + y = 12 -x = -y - 10
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OpenStudy (anonymous):
leave x or y to one side of the equation and plug in the value to the other side of the eq. for example. if you have a) x=y+1 and b) y+x=3 you just plug in y+1 instead of x in equation b and solve for x.
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