To set up an algebraic equation, you would write

n/2 = n/6 + 3

then find a Lowest Common Denominator

3n/6 = n/6 + 3

subtract n/6 from both sides

2n/6 = 3

multiply both sides by 6/2

n = 9

and you're done!

n/2 = n/6 + 3

then find a Lowest Common Denominator

3n/6 = n/6 + 3

subtract n/6 from both sides

2n/6 = 3

multiply both sides by 6/2

n = 9

and you're done!