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OpenStudy (anonymous):
use the substitution method to solve each system of equations. its got a bracket on the whole left side of the problem: 4x-y=9 2x+3y=-27
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OpenStudy (anonymous):
solve one of the equations for a single variable, then plug that variable back into the other equation so the top equation becomes y=4x-9 plug in 4x-9 into the second equation for y 2x+3(4x-9)=-27 solve for x then plug in the value for x back into the top equation to solve for the value of y
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