Adding Fractions Rational Expression

Find the least common denominator of the expression

• 18

• 6x

• 3xy

• 6xy

• 
• 
• 
• 

• A
• B
• C
• D

• (x+1)(x-1)

• (x+1)² (x-1)

• (2x+2)

• A

• B

• C

• D

Find the LCD of these fractions.

• (x+2)(x-2)

• (x+2)(x+1)

• (x+2)(x-2)(x+1)

• (x-2)(x+1)

• Change Mixed numbers into improper fractions.

• Get common denominators and equivalent fractions.

• Follow Adding Rules across the top and keep the same denominator.

• All of the above.

-1/2 - (-5/9)

• 1/18

• -1/18

• 6/11

• 4/18

Answer explanation

Correct answer 1/18

It can be written in the form P/Q where P and Q are both polynomials and Q is not equal to 0.

• Expressions

• Decimal expressions

• Rational expressions

• Percentage

Allison and Wesley are adding 1/7 and 3/7. Who is correct?

• Wesley

• Allison