4.2 Adding and Subtracting Rational Expressions

Find the least common denominator of the expression

• 18
• 6x
• 3xy
• 6xy

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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

• (5x + 4y) / 9y
• (6y + 3x) / 3y
• (2y + x) / y
• (6y + 3x) / 9y 

Tags

CCSS.HSA.APR.D.7

When adding rational numbers with the same sign, you must:

• Subtract and keep the sign of the biggest number

• Add together and keep the sign

• Keep, change, switch

• Add the opposite

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CCSS.7.NS.A.1C

Subtract

• A
• B
• C
• D

Tags

CCSS.HSA.APR.D.7

Subtract, factor, simplify

• A
• B
• C
• D

Tags

CCSS.HSA.APR.D.7

Add

• A.

• B.

• C.

• D.

Tags

CCSS.HSA.APR.D.7

• A

• B

• C

• D

Tags

CCSS.HSA.APR.D.6

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• 
• 
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CCSS.HSA.APR.D.7