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OpenStudy (anonymous):
-3x-2y=5.5; x+3y=7.5
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OpenStudy (anonymous):
What are you stuck on?
OpenStudy (anonymous):
i know you solve it by substitution, i cant figure out which equation to start off with
OpenStudy (anonymous):
-3x-2y=5.5 (x+3y=7.5) *3
OpenStudy (anonymous):
-3x-2y=5.5 + 3x+9y=22.5 The x's cancel, so you get 7y=28
OpenStudy (anonymous):
solve for y, then input the value of y into (x+3y)=7.5 to solve for x
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OpenStudy (anonymous):
@smarks01
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