Question

13/18-5/6

Answer 1

13/18-5/6
13/18-15/18=-2/18=-1/9

Answer 2

how did you get that 15

Answer 3

we need both denominators to be the same in order to add or subtract fractions.
since 6 is a factor of 18, the easiest thing to do is multiply 6 by 3 to get 18. but what you do to the denom you must also do to the numerator. so multiply -5 by 3 and you get -15.

ok?

Answer 4

oh ok thank you