8.2 Add Substract Rationals

Simplify the expression

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

Simplify the expression

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

Simplify the expression

• (2a + 4b) / 12b²
• (2a - 4b) / 12b² 
• (a - b) / 6b²
• (a + 2b) / 6b² 

Find the LCD of these fractions.  Start by factoring denominators!

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

Simplify the expression

• (5x + 4y) / 9y

• (6y + 3x) / 3y

• (2y + x) / y

• (6y + 3x) / 9y

Simplify the expression

• (-17x - 12y) / 15x

• (23x - 4y) / 15x

• (-17x - 4y) / 15x

• (-3x - 4y) / 8x

• A.
• B.
• C.
• D.

• A.
• B.
• C.
• D.

Subtract the fractions

• a
• b
• c
• d

Simplify

• a
• b
• c