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OpenStudy (anonymous):
80x+60y=85 100x-40y=20 Solve each system
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OpenStudy (anonymous):
I prefer to solve via substitution. First you solve one equation for a variable, then plug that in to the other equation. So if you decide to solve the first equation for x, then yo replace all instances of x in the other equation with what x equals in the first equation and then isolate y.
OpenStudy (anonymous):
Okay thanks
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