SOLUTION: the sum of twice a number and 4 is -12.

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Question 575862: the sum of twice a number and 4 is -12.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
"the sum of twice a number and 4 is -12" translates to 2n+4 = -12, solve for n to get


2n + 4 = -12

2n = -12 - 4

2n = -16

n = -16/2

n = -8


So the unknown number is -8