The value of -8/15 . 20/24 is?

for 25pts! i need asap!

Step-by-step explanation:

Do you mean multiply?

- 8/15 * 20/24

- 8/15 * 5/6

5 and 15 have a common divisor -- 5

- 8/3 * 1 / 6

8 and 6 can be divided by 2.

-4/3 * 1/3

-4 / 9

You could do the same thing without cancellation.

-8/15 * 20/24 = -160 / 360    

Now you can divide by common factors. Start by dividing top and bottom by 10

- 16 / 36            Now divide top and bottom by 4

- 4 / 9

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this