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26-09-2016
Mathematics

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multiply a number by 3 subtract 6 add 2 result is 20 what is the number

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Аноним Аноним

26-09-2016

8 is the correct answer

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wolfnat000 wolfnat000

26-09-2016

x * 3 - 6 +2 = 20
x * 3 - 6 = 20 -2
x* 3 - 6 = 18
x* 3 = 18 + 6
x * 3 = 24
x = 24/3

x=8

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