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24 November, 08:15

7z-18 = - 2z + 19 solve for z. Show work.

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  1. 24 November, 08:33
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    z=37/9

    Step-by-step explanation:

    move the variable to the left side and change its sign: 7z+2z-18=19

    collect like terms, so add the 7 and 2: 9z=19+28

    add the 28 and 19: 9z=37

    divide both signs by 9: 37/9
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