6 less than the product of a number and 3 is -18..what is the number?

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14-12-2016
Mathematics

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6 less than the product of a number and 3 is -18..what is the number?

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calculusxy calculusxy · Answer 1 · 2016-12-14T02:14:31+01:00

calculusxy calculusxy

14-12-2016

The product of a number and 3 can be represented as 3n (where n = unknown number). Then 6 less than 3n is 3n - 6.

3n - 6 = -18
3n = -12
n = -4

Check:
-4 x 3 = -12
-12 - 6 = -18 (this works!)

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