I only need help with the circled ones

Step-by-step explanation:
9. ⅔×½=⅓ ( the 2 in the numerator cancel out with the 2 in the denominator).
12. ⅓×¼=¹/(3×4) = ¹/12. (multiply the denominators 3 & 4)
15. ⁴/10×⅖= 4/25. (divide 2 in the numerator with the 10 in the denominator which gives the quoetiont 5) .
hope this helps you.