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Math Help - Someone please show me how to find X

  1. #1
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    Someone please show me how to find X

    9X + (-5X) = 52
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  2. #2
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    e^(i*pi)'s Avatar
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    Quote Originally Posted by OneidaFL View Post
    9X + (-5X) = 52
    9x - 5x = x(9-5) = 4x

    4x = 52
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  3. #3
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     9x + (-5x) = 52 (the + (-5x) would just be -5x.. positive times negative = negative)  9x - 5x = 52  4x = 52 (subtracting like terms)  \frac {4x}{4} = \frac {52}{4} (isolating x by divinding by 4 on both sides)  x=13
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