Adding and Subtracting Rational Expressions 2

Simplify the expression

• 6x / 20xy

• 3 / 10y

• (6x+1) / (20xy)

• 3 / 20xy

Simplify the expression

• (2a + 4b) / 12b²

• (2a - 4b) / 12b² 

• (a - b) / 6b²

• (a + 2b) / 6b² 

Subtract
 $\frac{x^2-3}{2x+7}-\frac{2x-5}{2x+7}$  

•  $\frac{x^2-2x-8}{2x+7};\ x\ne-\frac{7}{2}$  

•  $x^2-2x-8;\ x\ne0$  

•  $x^2-2x+2;\ x\ne0$  

•  $\frac{x^2-2x+2}{2x+7};\ x\ne-\frac{7}{2}$  

Subtract
 $\frac{x-5}{3x+4}-\frac{3x-5}{3x+4}$  

•  $\frac{-2x-10}{3x+4};\ x\ne-\frac{4}{3}$  

•  $\frac{-2x}{3c+4};\ x\ne-\frac{4}{3}$  

•  $-2x;\ x\ne0$  

•  $-2x-10;\ x\ne0$  

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What is the sum of the following expressions

• x²+6x / (x+2)(x-2)

• (x-2) / (x+2)

• (x+2) / (x-2)

• x³-3x+5 / (x²-4)(x+2)

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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)

 $\frac{\left(x-3\right)}{x^2+3x-4}+\frac{2x}{x+4}$  

•  $\frac{\left(2x^2-x-3\right)}{\left(x+4\right)\left(x-1\right)}$  

•  $\frac{\left(2x^2-3x-3\right)}{\left(x+4\right)\left(x-1\right)}$  

•  $\frac{\left(3x-3\right)}{\left(x+4\right)\left(x-1\right)}$  

•  $\frac{\left(3x^2-x-3\right)}{\left(x+4\right)^2\left(x-1\right)}$