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4 April, 14:04

What value of X makes this equation true - 90 equals - 100 + X

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  1. 4 April, 14:18
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    -90 = - 100 + x

    To solve for X, you need to isolate it (get it by itself).

    Add 100 to each side:

    -90 + 100 = - 100 + x + 100

    Simplify:

    10 = x

    X = 10
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