help me expand this calculation so that I understand the result please. why is 1-(10/75) = 13/15 ?

Guest Oct 6, 2019

#1**+2 **

Don't simplify 10/75

First, do 1 - (10/75)

(75/75) - (10/75) = 65/75

THEN simplify

13/15

CalculatorUser Oct 6, 2019

#3**+1 **

*help me expand this calculation so that I understand the result please. why is 1-(10/75) = 13/15 ?*

CU's way is very good, but you __could__ reduce 10/75 first if you wanted to.

we're starting with 1 – (10/75)

reduce 10/75 by dividing both top and bottom by 5 1 – (2/15)

since 1 = 15/15 (15/15) – (2/15) = 13/15

.

Guest Oct 7, 2019

#4**0 **

You could also see that 1 = 13/15 + 10/75

However, CU and Guest's method would probably be better.

You are very welcome!

:P

CoolStuffYT Oct 7, 2019