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

I don't know how to solve it . I don't know how to step it up-example-1
User Andrew Barber
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(-1,2) solve for the first variable in one of the equations, then substitute the result into the other equation
User Hamed Hossani
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