mirandanhewitt mirandanhewitt

08-05-2015
Mathematics

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What times what equals -18 but adds up to -7?

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RedRicin RedRicin

08-05-2015

Think of numbers that multiply to get 18 and see if they can make 7.
18 and 1 isn't going to make 7.
9 and 2 can, though!

One will need to be negative so that it multiplies to MINUS 18.
-9 + 2 = -7, so there's our answer.

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