Peter R. answered 12/02/22
Experienced Instructor in Prealgebra, Algebra I and II, SAT/ACT Math.
The sum of 3 and a number (n) = 3 + n
If you divide expression by 3, you get (3 + n)/3
That is equal to 5, so we have (3 + n)/3 = 5
Can you solve for n?