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21 January, 17:21

3 times 21 more than a number is 12. What is the number?

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Answers (2)
  1. 21 January, 17:24
    0
    Answer: x = - 17

    Form your equation, where x is the number.

    3 (x + 21) = 12

    Solve for x.

    3 (x + 21) = 12 Distributive Property

    3x + 63 = 12 Subtract 63 from both sides

    3x = - 51 Divide by 3 to both sides

    x = - 17 Answer!
  2. 21 January, 17:28
    0
    Turn it into an equation then solve.

    3 (x + 21) = 12

    3x + 63 = 12

    3x = - 51

    x = - 17
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