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MathematicsMathematics
17 July, 03:19

A teacher asked the class to solve the equation 3 (x+2) = 21. Robert wrote 3x + 6 = 21 as his first step. Which property did he use?

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Answers (2)
  1. 17 July, 05:12
    0
    Distributive Property of Multiplication over Addition

    Step-by-step explanation:

    Robert multiplied the 3 by everything in the parenthesis, so

    3*x=3x

    and

    3*2=6

    This is called the Distributive Property. To be more specific, he is multiplying 3 by two the terms being added in the parenthesis, which is x+2.

    This is called the Distributive Property of Multiplication over Addition.
  2. 17 July, 06:34
    0
    Distributive Property
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Home » Mathematics » A teacher asked the class to solve the equation 3 (x+2) = 21. Robert wrote 3x + 6 = 21 as his first step. Which property did he use?
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