How do you evaluate 1- \frac { 4} { 7} + \frac { 3} { 5}?

1 Answer
Sep 13, 2017

1 1/35

Explanation:

1-4/7=3/7
Then, we do 3/7+3/5.
In order to do that, we have to make the denominators of 3/7 and 3/5 the same. (Denominator is the bottom number.)
The closest multiple of 5 and 7 is 35 so we will use 35 as the new denominator.
3/7 = 15/35 and 3/5 = 21/35
21/35+15/35=36/35
Now we will change it to a mixed number.
36/35 = 1 1/35