Can 15 21 be simplified?
Yes, 15/21 can be simplified. To find the simplest form, divide both the numerator (15) and the denominator (21) by their greatest common divisor, which is 3. This results in 15 ÷ 3 = 5 and 21 ÷ 3 = 7. Therefore, the simplified form of 15/21 is 5/7.