Algebra

Solve by addition or substitution;

10x + 2y = 7
y= -5 + 3

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  1. Substitute y in the first equation with the second equation.

    10x + 2(-5+ 3) = 7
    10x + -10 + 6 = 7
    10x - 4 = 7
    10x = 11
    x = (11/10), or 1.1

    Did I explain it well enough?
    :)

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