algebra verbal sentence

create an equation....and solve..

The difference of a number multiplied by negative two and twelve is equal to the sum of nine and the number.
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1 Answer

-2n-12=9+n          check: -2(-7)-12=9-7      

-2n-n-12=9                        14-12=9-7

-3n-12=9                                  2=2

-3n=9+12

-3n=21

n=-7
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