Answer:
y = 2/3
Step-by-step explanation:
1) Find the GCD (or HCF) of numerator and denominator
GCD of 10 and 15 is 5.
2) Divide both the numerator and denominator by the GCD
10 ÷ 5 = 2
15 ÷ 5 = 3
3) Reduced fraction: 2 /3
Therefore, 10/15 simplified to lowest terms is 2/3.
