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1 June, 21:41

За + 4a = - 21 Solve the problem

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  1. 1 June, 21:47
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    a = - 3

    Step-by-step explanation:

    3a + 4a = - 21

    3a + 4a = 7a

    7a = - 21 Divide both side with 7

    -21 / 7 = - 3

    a = - 3

    To make it true ...

    3 (-3) + 4 (-3) =

    -9 + (-12) = - 21

    -21 = - 21
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