Adding and Subtracting Rational Expressions Like Denominators

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.

• k = 7
• x = 7.1
• x = 7.6
• x = 1/7

Perform the operation

• A

• B

• C

• D

Perform the operation

• A

• B

• C

• D

• A
• B
• C
• D

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Add

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Add. 

• A

• B

• C

• D

• A
• B
• C
• D

Perform the operation

• A

• B

• C

• D