Twelve less than a number is -3. How do you find the number?

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Answer 1 · 2016-10-18T03:37:00

The number is 9

#n-12=-3#
#n-12+12 =-3+12#
#n=9

Answer 2 · 2016-10-18T03:38:27

#x=9#

Let us represent the number by #x#

Since #12# less than #x# is #-3#, this can be written as:

#x-12=-3#

Add #12# to both sides.

#x=-3+12#

#:.x=9#