To simplify the fraction 6/15, we need to find the greatest common divisor (GCD) of both the numerator (6) and the denominator (15).
The factors of 6 are 1, 2, 3, and 6, while the factors of 15 are 1, 3, 5, and 15. The greatest common factor between 6 and 15 is 3.
Next, we divide both the numerator and the denominator by their GCD:
Numerator: 6 ÷ 3 = 2
Denominator: 15 ÷ 3 = 5
So, when we simplify 6/15, we get 2/5.
In conclusion, the simplified form of 6/15 is 2/5.