Find the sum or difference.
$(7 g - 6) - (- 3 n - 4)$

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Solution

Simplify the like terms:
$(7 g - 6) - (- 3 n - 4) = (7 g) + (- 6) + (3 n + 4) {A d d t h e o p p o s i t e} = (7 g) + (3 n) + [(4) + (- 6)] {C o m m u t a t i v e p r o p e r t y} = (7 g) + (3 n) + (- 2) {C o m b i n e l i k e t e r m s}$
Final Answer: $7 g + 3 n - 2$

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