Pre-Algebra

How do you solve 4x+4=9x-36?
I understand that you need to get the variables alone but to I add or subtract 9x to both sides?

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  1. 4 x + 4 = 9 x - 36
    9 x + 4 = 9 x + 4
    ===================== subtract
    -5 x + 0 = 0 x - 40

    -5 x = -40 divide both sides by 5
    x = 8

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    posted by Damon

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