Question

Which of the following statements best describes operations with algebraic fractions? Select all that apply.

Algebraic fractions contain variables, exponents, and operations with polynomials.
To add and subtract with fractions, the denominators do not need to be the same.
Finding the least common denominator involves factoring.
To add and subtract with fractions, the denominators must be the same.

Answer 1

the answer is

Finding the least common denominator involves factoring.
To add and subtract with fractions, the denominators must be the same.

Answer 2

Here two statements seems correct-

1. Algebraic fractions are fractions that contain variables, exponents, and operations with polynomials.

2. To add and subtract with fractions, the denominators must be the same.

To add or subtract algebraic fractions, first we find the lowest common multiple of the denominators. Then we express all the fractions in terms of the LCD. And then we simplify the numerators.