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29 July, 22:07

Use substitution to solve the system of linear equations.{-x+y=5 4x+y=10} In your final answer, include all of your work.

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  1. 29 July, 22:24
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    Solve for a variable in one of the equations and then use that equality to substitute into the other equation.

    1st Eq.

    -x + y = 5

    y = 5 + x

    Substitute this in for "y" in 2nd Eq.

    2nd Eq.

    4x + y = 10

    4x + (5+x) = 10

    4x + 5 + x = 10

    5x + 5 = 10

    5x = 10 - 5

    5x = 5

    x = 5/5

    x = 1
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