Here's how to subtract 9/10 from 7/10:
Since our denominators match, we can subtract the numerators.
7 − 9 = -2
So the answer is:
Last of all, we need to simplify the fraction, if possible. Can it be reduced to a simpler fraction?
To find out, we try dividing it by 2...
Are both the numerator and the denominator evenly divisible by 2? Yes! So we reduce it:
Let's try dividing by 2 again...
No good. 2 is larger than -1. So we're done reducing.There you have it! The final answer is: