Combine Terms With Rational Numbers

Add or subtract terms with the same variable and exponent.

• complete the square

• deductive reasoning

• combine like terms

• isolate the variable

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.

Perform the operation

• A

• B

• C

• D

Find the least common denominator of the expression

• 18

• 6x

• 3xy

• 6xy

• A
• B
• C
• D

• A
• B
• C

• A
• B
• C

(a)  

• F

• G

• H

• J

• A
• B
• C
• D

Simplify the expression by combining like terms: 2x + 1 + 7x

• 10x

• 10

• 9x + 1

• 9 + 1x