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21 March, 05:55

Work out:

3 (a+5b) + 4 (2a+4b)

+3
Answers (2)
  1. 21 March, 06:42
    0
    Multiply the brackets.

    3a + 15b + 8a + 16b

    Now add the ones with the same variables.

    11a + 31b

    ∴The answer is 11a + 31b
  2. 21 March, 08:49
    0
    Distribute

    3a + 15b + 8a + 16b

    Add the like terms

    11a + 31b
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