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Mathematics 10 Online
OpenStudy (anonymous):

substitution -7x+2y=18 6x+6y=0

OpenStudy (anonymous):

Solve one equation for y (or x) and substitute the whole equation into the second equation for that variable

OpenStudy (anonymous):

1. y=x+9 2. y=-x

OpenStudy (anonymous):

thanks you guys

OpenStudy (anonymous):

u welcome

OpenStudy (anonymous):

No problem

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