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12 October, 08:51

12a + (-7) + 12a=13 what is the value of a

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  1. 12 October, 10:35
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    Rememeber thath you can do anything to an eqation as long as you do it to both sides

    12a-7+12a=13

    add like terms

    24a-7=13

    add 7 to both sides

    24a=20

    divide both sides by 24

    a=20/24

    a=5/6
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