Simplify (12 – 3) + 15+5 (-2)

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1. Answer:

   14

   Step-by-step explanation:

   The multiplication must be done before the addition and subtraction.

   (12 – 3) + 15+5 (-2)

   becomes (9) + 15 + 5(-2), which in turn becomes

                    (9) + 15 – 10, or 14

                

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