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7 November, 22:47

Which algebraic expression is equivalent to the expression below?

7 (5x + 3) + 3 (12 - x)

A.

32x + 57

B.

32x + 15

C.

32x - 57

D.

38x + 57

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Answers (1)
  1. 8 November, 00:40
    0
    Simple ...

    you have 7 (5x+3) + 3 (12-x) ...

    just take them apart ...

    7 (5x+3)

    distribute the 7 ...

    7*5x=35x

    and

    7*3=21

    Now, the other part ...

    3 (12-x)

    Distribute the 3 ...

    3*12=36

    and

    3*-x=-3x

    Now, add what you have found ...

    35x+21+36-3x

    32x+57

    Thus, your answer, A.
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