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What integer is tripled when 9 is added to three-fourths of it?

1 Answer

3 votes

Answer:

4

Explanation:

let n be the integer , then n tripled is 3n, so


(3)/(4) n + 9 = 3n ( multiply through by 4 to clear the fraction )

3n + 36 = 12n ( subtract 3n from both sides )

36 = 9n ( divide both sides by 9 )

4 = n

the required integer is 4

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