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The number is 18. Let's make the number X.

So 1/3 of X = X-12, of means multiplication.

1/3 × X= X-12,

X=3(X-12)

X= 3X-36

Collect like terms,

X-3X= -36

-2X=-36

The minus sign will be cancelled.

2X=36

Divide both sides by 2

X=18.

Do let me know if you understand. Thanks.

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Victor Ojo

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2021-10-28 13:05:45
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Q: “One-third of a number is 12 less than the number itself “?
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