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10 December, 12:19

Solving Equations 3k+10=2k-21

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  1. 10 December, 16:11
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    3k+10=2k-21

    move 2k to the other side

    sign changes from + 2k to - 2k

    3k-2k+10=2k-2k-21 (combine like terms)

    3k-2k+10 = - 21

    k+10=-21

    move + 10 to the other side

    k+10-10 = - 21-10

    k = - 21-10

    answer:

    k = - 31
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