Find the sum. $(- 2.1 m - 5) + (3 m - 7)$

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Solution

Step 1: We have given expression
$= (- 2.1 m - 5) + (3 m - 7) = - 2.1 m + 3 m - 7 - 5 {C o m m u t a t i v e p r o p e r t y} = 0.9 m - 12 {C o m b i n e l i k e t e r m s}$
Final Answer: $0.9 m - 12$

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