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17 September, 11:24

In the equation 3x+3y+3z=18 what does x equal

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  1. 17 September, 11:32
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    3x+3y+3z=18

    Start by subtracting both sides by 3z

    3x + 3y = 18 - 3z

    Now, you can subtract 3y from both sides ...

    3x = - 3z - 3y + 18

    Finally ... To get x by itself divide both sides by 3 ...

    x = - z - y + 6 is the answer
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