Question

plz answer this question

Answer 1

let X be the number
2X+9
3(2X+9)=75
6X+27=75
6X=48
X=8
then the number is 8

Answer 2

let the no be x
2x+9=75
3 (2x+9)=75
(2x+9)=75/3
(2x+9)=25
2x= 25-9
2x=16
x=16/2
x=8