leannatig leannatig

01-03-2017
Mathematics

contestada

I don't know how to solve it . I don't know how to step it up

I dont know how to solve it I dont know how to step it up class=

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valadezj1 valadezj1

01-03-2017

(-1,2) solve for the first variable in one of the equations, then substitute the result into the other equation

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