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Mathematics 12 Online
OpenStudy (anonymous):

solve this equation using substitution, show work please! 7x+2y= -13 and -3x-8y= -23

OpenStudy (anonymous):

easy just look up how to do a substitution solving on youtube. or else you will never learn.

OpenStudy (anonymous):

that doesnt help.

OpenStudy (mertsj):

Let's solve the first equation for x

OpenStudy (mertsj):

x=-13/7-2y/7

OpenStudy (mertsj):

Now replace x with that value in the second equation.

OpenStudy (mertsj):

|dw:1326592799632:dw|

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