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9 May, 03:22

Two-thirds of a number added to itself is 20. What is the number?

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  1. 9 May, 06:52
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    12

    Step-by-step explanation:

    2/3 x + x = 20

    2/3 x + 3/3x = 20

    5/3 x = 20 ... times 3/5 both sides

    x = 12

    check: 2/3 x 12 + 12 = 8 + 12 = 20
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