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16 May, 20:55

Simplify

8m+4n+7m-2n

What is the answer?

a) 17mn

b) m + 2n

c) 15m + 2n

d) 15m + 6n

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Answers (2)
  1. 16 May, 21:17
    0
    8m + 4n + 7m - 2n

    You wouldn't have any trouble with this at all if it said

    8monkeys + 4nuts + 7monkeys - 2nuts

    First you would look through it to see how many monkeys there are all together. You would addum up.

    8monkeys + 7monkeys = 15 monkeys

    Then you would look through it to see how many nuts there are all together, and you would addum up.

    4nuts - 2nuts = 2 nuts

    Then you would write these results on one line:

    15monkeys + 2nuts.

    Why should it be a big tough deal when there's just a bunch of m's and n's?

    First, just look through it to see how many m's there are all together, and addum up:

    8 m's + 7 m's = 15 m's

    Then just look through it to see how many n's there are all together, and addum up:

    4 n's - 2 n's = 2 n's

    Then write these results on one line:

    15 m + 2 n.

    That's choice-c.
  2. 16 May, 21:18
    0
    c) 15m + 2n

    Step-by-step explanation:

    8m+4n+7m-2n

    Combine like terms

    8m+7m + 4n-2n

    15m + 2n
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