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OpenStudy (anonymous):
when using the substitution method, what expression for x in the first equation would be substituted in the second equation? x+3y=-7 2x+4y=-4
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OpenStudy (anonymous):
Solve the first equation for x. x+3y=-7 (subtract 3y from both sides) x=-3y-7 Substitute for x in the second equation. 2(-3y-7)+4y=-4. Solve for y. You should be on your way to solving this!
OpenStudy (anonymous):
thanks
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