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14 June, 10:01

Factor each expression 77x+21

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  1. 14 June, 11:23
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    77x + 21

    We need to find the common factor between the coefficient and the constant.

    77 : 7 = 11

    21 : 7 = 3

    7 (11x + 3) is the factor of 77x + 21.

    7 (11x + 3) can be expanded using the distributive property of multiplication.

    7 (11x) + 7 (3) = 77x + 21
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