Subtract. 5/7−2/5

Enter your answer as a fraction in simplest form by filling in the boxes.

11/35

Step-by-step explanation:

Make the denominator the same and subtract

5/7 turns into 25/35 and 2/5 turns into 14/35 that gives you 11/35

5/7-2/5= 11/35

You need to make them have the same second half, so u get them to the least common factor of 7 and 5 which is 35. you would multiply 5/7 by5

5/7 x 5 = 25/35

And you would multiply 2/5 by 7

2/5 x 7 = 14/35

Then you would subtract 25/35 by 14/35

25/35 - 14/35 = 11/35

This is simplified as much as it can be, because 11 is a prime number so u would have to be able to divide 35 by 11 which does not come out as a whole number so u cant do that for a fraction causing it to stay as 11/35

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)