college algebra

write two equations that have your two intergers as a solution.

5x-y=10

X + 6y=18
addition and subtraction methods

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  1. 5x-y=10
    x+6y=18
    multiply the 2nd equation by -5 because you want to either make the x's or y's cancel
    -5x-30y=-90
    5x-y=10
    -31y=-80
    solve for y (it should be a fraction, not a whole number)
    put that back in for y in any equation to solve for x

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