Question

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

Answer 1

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