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16 March, 03:20

Four expressions are shown below:

A: 21x + 6

B: 3 (7x + 2)

C: 18x + 9

D: 3 (6x + 3)

Which two expressions are equivalent to 3 (6x + 2 + x) ?

A and D

C and D

A and B

B and C

+3
Answers (2)
  1. 16 March, 03:28
    0
    A and D

    are two equivalent expressions
  2. 16 March, 03:47
    0
    The answer is a because you multiply 3 (6x) (2) (x) than drop all the signs down. you will get 18x+6+3x so u have a like term now 118x and 3 x so u add them ur answer will be 21x+6
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