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10 April, 04:57

I thought of a number, multiplied it by 2 1/2, divided the result by 1 1 / 5, subtracted 7/18 from it, and got 1 5/6. What was my number?

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  1. 10 April, 05:11
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    X=88/45

    (2.5x / (11/5)) - (7/18) = (11/6) - Equation

    (12.5x/11) - (7/18) = (11/6) - Multiply 2.5*5 = 12.5

    (125x/11) - (35/9) = (55/3) - Multiply both sides by 10

    (125x/11) = (200/9) - Add (35/9) to both sides

    125x = (2200/9) - Multiply both sides by 11

    x = (88/45) - Divide both sides by 125
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Home » Mathematics » I thought of a number, multiplied it by 2 1/2, divided the result by 1 1 / 5, subtracted 7/18 from it, and got 1 5/6. What was my number?
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