Adding and Subtracting Rational Expressions

Find the least common denominator of the expression

• 18
• 6x
• 3xy
• 6xy

Tags

CCSS.HSA.APR.D.7

Find the LCD of the following rational expressions
 $\frac{2x}{x+1}$  and  $\frac{1}{x^2-1}$ 

• (x+1)(x-1)

• (x+1)² (x-1)

• (2x+2)

Tags

CCSS.HSA.APR.D.6

CCSS.HSA.APR.D.7

Find the LCD of these fractions.

• (x+2)(x-2)
• (x+2)(x+1)
• (x+2)(x-2)(x+1)
• (x-2)(x+1)

Tags

CCSS.HSA.APR.A.1

CCSS.HSA.APR.D.6

CCSS.HSA.APR.D.7

Find the LCD of these fractions.

• (x+2)(x-2)
• (x+2)
• (x-2)
• (x²-4)(x+2)

Tags

CCSS.HSA.APR.A.1

CCSS.HSA.APR.D.6

CCSS.HSA.APR.D.7

Simplify the expression

• 6x / 20xy
• 3 / 10y
• (6x+1) / (20xy)
• 3 / 20xy

Tags

CCSS.HSA.APR.D.7

Simplify the expression

• n / 2m 
• n / 3m 
• (m² + 4n²) / 12m
• n / 4m 

Tags

CCSS.HSA.APR.D.7

Simplify the expression

• (-17x - 12y) / 15x

• (23x - 4y) / 15x

• (-17x - 4y) / 15x

• (-3x - 4y) / 8x

Tags

CCSS.HSA.APR.D.7

• A
• B
• C
• D

Tags

CCSS.HSA.APR.D.7

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• 
• 
• 

Tags

CCSS.7.NS.A.1C

Simplify the expression

• (12n² + 28n + 4) / (2n-5)(n+2)
• (12n² - 28n + 4) / (2n-5)(n+2)
• (8n) / (3n + 3)
• (12n² + 2n -3) / (2n-5)(n+2)

Tags

CCSS.HSA.APR.D.7