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Mathematics 9 Online
OpenStudy (anonymous):

X=y, 5x-3y=12

jimthompson5910 (jim_thompson5910):

if x = y, then 5x - 3y = 12 5x - 3x = 12 ... replace y with x (since x = y) now solve for x

OpenStudy (anonymous):

Thanks

jimthompson5910 (jim_thompson5910):

yw, tell me what you get

OpenStudy (anonymous):

I got 6?

jimthompson5910 (jim_thompson5910):

good, x = 6

jimthompson5910 (jim_thompson5910):

so because x = y, we also know that y = 6

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