# What is the sum of #\frac { - x + 7} { 2x + 4}# and #\frac { 2x + 5} { 2x + 4} #?

See the solution process below:

We can rewrite this as the expression:

Because both terms have the same denominator we can add the numerators over the common denominator:

We can now group and combine like terms in the numerator:

By signing up, you agree to our Terms of Service and Privacy Policy

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

- How do you divide and reduce the expression to the lowest terms #2xy \-: \frac{2x^2}{y}#?
- Constant of the variation?
- How do you solve the rational equation #(y+2)/y = 1/(y-5)#?
- Does the time required to fly from Charlotte to San antonio vary inversely, directly or neither with the speed at which the airplane flies?
- How do you simplify #(-7c)/(21c^2-35c)#?

- 98% accuracy study help
- Covers math, physics, chemistry, biology, and more
- Step-by-step, in-depth guides
- Readily available 24/7