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Mathematics 9 Online
OpenStudy (anonymous):

solve the system of equations 10x+7y=99 and y-x=2

OpenStudy (jdoe0001):

if you solve the 2nd one for say "y" what would yuou get?

OpenStudy (anonymous):

Multiply the second equation by 7 or by 10.

OpenStudy (gorv):

welcome to os :)

OpenStudy (gorv):

y-x=2 add x on both side

OpenStudy (gorv):

and u will get value of y and in first equation replace y by that value

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