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21 February, 08:11

7 (3a-2b) + 5b-3 (4a+2)

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  1. 21 February, 08:25
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    Answer: 9a-9b-6

    7 (3a-2b) + 5b-3 (4a+2)

    Distribute:

    7 (3a-2b) + 5b-3 (4a+2)

    = (7) (3a) + (7) (-2b) + 5b + (-3) (4a) + (-3) (2)

    =21a+-14b+5b+-12a+-6

    Combine Like Terms:

    =21a+-14b+5b+-12a+-6

    = (21a+-12a) + (-14b+5b) + (-6)

    =9a+-9b+-6
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