To solve this expression, we will first simplify each fraction:
(-11/15)(-10/11)(-9/10) = 1/15
(-7/9)*(-6/7) = 2/3
Putting it all together:
1/15 + 2/3 + 4/15 = 6/15 + 10/15 + 4/15 = 20/15 = 4/3
Therefore, the final answer is 4/3.
To solve this expression, we will first simplify each fraction:
(-11/15)(-10/11)(-9/10) = 1/15
(-7/9)*(-6/7) = 2/3
Putting it all together:
1/15 + 2/3 + 4/15 = 6/15 + 10/15 + 4/15 = 20/15 = 4/3
Therefore, the final answer is 4/3.