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14 October, 09:22

Fully factorise 15ab - 35a

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  1. 14 October, 09:34
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    The answer is 5a (3b-7).

    Step 1: find the common factor. since both 15ab and 35a has a common "a" and a factor of "5", you factorise them out.

    Step 2: place the common factor at the front and divide the equation from the common factor.

    5a (3b-7) = 15ab - 35a
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