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Mathematics 8 Online
OpenStudy (anonymous):

solve each system by substitution y=x-4 2x=3y=-7

OpenStudy (dtan5457):

They already isolated y for you, just plug that into the 2 equation 2x=3(x-4)-7

OpenStudy (dtan5457):

Solve for x

jimthompson5910 (jim_thompson5910):

2x=3y=-7 has too many equal signs

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