Adding and Subtracting Rational Expressions with Like Denominators

Perform the operation

• A

• B

• C

• D

Perform the operation

• A

• B

• C

• D

• k = 7
• x = 7.1
• x = 7.6
• x = 1/7

• A
• B
• C
• D

• A

• B

• C

• D

• A
• B
• C
• D

• A
• B
• C
• D

• A
• B
• C
• D

When adding and subtracting rational expressions, my first step should be to:

• Combine like terms in the numerators.

• Determine a Least Common Denominator.

• Factor all of the numerators and all of the denominators.

• Change the operator to multiplication and reciprocate the second fraction.

When adding/subtracting rational expressions with like denominators, we need to ​ (a)   in the numerators .

• combine like terms

• factor

• do special cases

• simplify the expressions