Adding and Subtracting Fractions with Common Denominators Practice

Add the following rational expression.

• (7x+3)  /  (x-5)(x+8)

• (2x+3)  /  (x-5)(x+8)

• (2x+4)  /  (x-5)(x+8)

• (7x+4)  /  (x-5)(x+8)

Tags

CCSS.HSA.APR.D.7

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.

Tags

CCSS.HSA.APR.D.7

• 
• 
• 
• 

Tags

CCSS.HSA.APR.D.7

Identify the LCD.

• x²(x - 2)

• x(x - 2)

• x

• (x - 2)

Tags

CCSS.HSA.REI.A.2

Solve by using the LCD.

• x = 1

• x = -3

• x = 0 

• x = 3

Tags

CCSS.HSA.REI.A.2

When adding and subtracting fractions, which value needs to be the same in all values being added/subtracted?

• Numerator

• Denominator

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is the process of making two fractions with unlike denominators able to be added or subtracted called?

• Finding the least common multiple or least common denominator

• Addition

• Multiplication

• Reverse multiplication

Tags

CCSS.7.NS.A.1C

• 9/7

• 2/3

• 3/2

• 7/9

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is the first step of adding or subtracting two fractions?

• Checking if the numerators are the same

• Checking if the denominators are the same or different

• Checking that the fractions are equal

• Adding or subtracting

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2