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18 January, 03:49

Find the sum.

7x + 15x=

+3
Answers (2)
  1. 18 January, 07:10
    0
    Answer: 22x

    Step-by-step explanation: + 7x and + 15x are called terms and the numbers in front of the variables, + 7 and + 15 are called coefficients.

    Because the variables, x and x, are identical, the two terms in this problem are called like terms. Like terms can be added together by simply adding their coefficients. So in this problem, since 7 + 15 is 22, 7x + 15x is simply 22x.
  2. 18 January, 07:20
    0
    7x + 15x = 21x

    Step-by-step explanation:

    7x + 15x

    = (7 + 15) x

    = 22x
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