Question

Five more than three times a number is sixty -five

Answer 1

N - the number

3 · n + 5 = 65    |subtract 5 from both sides

3n = 60    |divide both sides by 3

n = 20

Answer 2

Let the required number be 'x'.
According to the question,
3x+5=65
3x=65-5
3x=60
x=60/3
x=20