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Twice a certain number is subtracted from 9 times the number.The result is 21. Find the number

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9 x - 2 x = 21

7 x = 21

x = 21 / 7

x = 3

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3

9x_2x=21 7x=21 x=21 divide 7 x=3

pls which dominion is it from abomss entering jss3b

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