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Mathematics 8 Online
OpenStudy (anonymous):

Find the solution to the system of equations. x + y + z = 19 y + z = 11 z = 6

OpenStudy (phi):

I would "back solve" you know z, so use z in the 2nd equation to find y. then use z and y in the 1st equation to find x. the 2nd equation is y+z= 11 can you replace z with 6 (because z=6), and solve for y?

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