Help me please with this Simplify. 5a-12a

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asked Oct 13, 2016 10.1k views

1 Answer

Kristoff · Answer 1 · 2016-10-18T22:03:01+0000

It helps to imagine the variable a sort of as a unit. Like with 5 minus 12 lemons, it has no bearings on the addition/subtraction here.

Factor out a and subtract.

$5a-12a \\ (5-12)a \\ \boxed{-7a}$

Help me please with this Simplify. 5a-12a

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