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OpenStudy (anonymous):
how do I solve 2x-8y=15, -6x+24y=15
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OpenStudy (anonymous):
system of equations
OpenStudy (uri):
2x-8y=15 (mutiply by 3) -6x+24y=15 6x-24y=45 -6x+24y=15 ========== -6 +6 will be cancelled -24 +24 will be cancelled No solution
OpenStudy (anonymous):
So I multiply just the two by 3?
OpenStudy (uri):
Noo the whole first eq
OpenStudy (anonymous):
okay so I write it like this 2x*3-8y*3=15 6x-24y=15 but when i subtracted the 6 from the 24 i came up with 18
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OpenStudy (uri):
we multiply 15 with 3 aswell
OpenStudy (uri):
and why are you subracting 6 from 24...we add first eq and second eq
OpenStudy (uri):
this has no solution anyway
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