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20 October, 22:52

Solve 4 (5-a) - 2.1 (6a) = - 4.9

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  1. 21 October, 00:14
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    4 (5-a) - 2.1 (6a) = - 4.9

    20 - 4a - 12.6a = - 4.9

    20 - 16.6a = - 4.9

    subtract 20 to both sides

    20 - 16.6a - 20 = - 4.9 - 20

    -16.6a = - 24.9

    divide both sides by - 16.6

    -16.6a/-16.6 = - 24.9/-16.6

    simplify

    a = 1.5
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