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MathematicsMathematics
7 September, 18:33

The difference of three times a number and three is twenty-one. Find the number.

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Answers (2)
  1. 7 September, 19:15
    0
    First, turn your problem into an equation.

    3x - 3 = 21

    x represents the unknown number.

    Your goal is to solve for x.

    Start by adding 3 to both sides.

    3x - 3 = 21

    + 3 + 3

    3x = 24

    Your next step is to divide by 3.

    3x/3 = 24/3

    x = 8

    Your answer is 8.

    Your welcome!
  2. 7 September, 20:10
    0
    the difference is eight
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