Question

(2 7\15-4)×(8 16\23-10)=

Answer 1

(2 7/15-4)*(8 16/23-10)=(37/15-60/15)*200/23-230/23)=-23/15*(-30/23)=690/345=2

Answer 2

To simplify the expression (2 7/15 - 4) * (8 16/23 - 10), first, let's calculate each part step by step.

1. Calculate 2 7/15 - 4: To subtract these mixed numbers, we need to find a common denominator, which is 15 in this case. (2 7/15 - 4) = (2 7/15 - 60/15) = (2 - 53/15) = (2 - 3 8/15) = -1 8/15.

2. Calculate 8 16/23 - 10: Similarly, we find a common denominator, which is 23 in this case. (8 16/23 - 10) = (8 16/23 - 230/23) = (8 - 214/23) = (8 - 9 7/23) = -1 7/23.

Now, you have:

(-1 8/15) * (-1 7/23)

To multiply these two mixed numbers, you can treat them as fractions.

(-1 8/15) * (-1 7/23) = (-23/15) * (-23/23) = (23/15) * (23/23) = (23/15) * 1 = 23/15.

So, the result of the expression is 23/15.