# How do you subtract #\frac { 9a - 11x } { 8a } - \frac { 2a - 7x } { 8a }#?

##### 1 Answer

May 1, 2018

#### Explanation:

To subtract two rational terms, it is necessary that they have a common denominator. In this case, both terms have a denominator of

At this point, we can make use of the algebraic property that

Thus we have

There is no further meaningful way to simplify this answer, so we are done. Do note, however, that just as we can combine terms with common denominators, we can also break them apart. See that: