SOLUTION: How do you differentiate whether to turn a negative sign into a positive or keeping it the same. For example 12c + 9b - (6c - 7b). It comes out to 6c+16b how do you get +16b?

SOLUTION: How do you differentiate whether to turn a negative sign into a positive or keeping it the same. For example 12c + 9b - (6c - 7b). It comes out to 6c+16b how do you get +16b?

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Question 491473: How do you differentiate whether to turn a negative sign into a positive or keeping it the same. For example 12c + 9b - (6c - 7b). It comes out to 6c+16b how do you get +16b?
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
12c+9b-6c+7b
6c+16b
You can't get there from here!
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