Let us write the equivalent fractions for 5/15 using multiplication and division.

a.) Let us multiply the numerator and the denominator with the same number 2. This means, (5 × 2)/(15 × 2) = 10/30

b.) Let us divide the numerator and the denominator with the same number 5. This means, (5 ÷ 5)/(15 ÷ 5) = 1/3

Therefore, 10/30 and 1/3 are equivalent to 5/15. In other words, 10/30, 1/3, and 5/15 are equivalent fractions.