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23 January, 00:50

How do I simplify 3x-8y+9x

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  1. 23 January, 01:04
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    You need to put together the numbers that have the same variables

    in this case 3x and 9x

    3x+9x = 12x

    As there is just one y you leave it like that

    so the answer is

    12x-8y
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