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Mathematics 8 Online
OpenStudy (anonymous):

Solve the system of equations. {3x - y = 6 {6x + y = 21

OpenStudy (lucaz):

add both equations and solve for x

OpenStudy (unklerhaukus):

can you add the equations @youngamerican ? (3x - y) + [6x + y] = (6) + [21]

OpenStudy (anonymous):

I'm confused as how to add it.

OpenStudy (unklerhaukus):

add the left hand sides together , and set equal to the sum of the right hand sides

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