Which of the following describes the relationship between the ring structures α-D-ribofuranose and β-D-ribofuranose, given that they rotate the plane of polarized light differently due to they differ in the position of a specific hydroxyl group?

Examine the Fischer projection below. How is this carbohydrate classified? 

Solve the equation and check. 4x = 2x –  

Subtract the polynomials.   + +     + – –                                                      

Solve the equation and check.x + = x –  

Add.   ( y x + z )+ ( z y + x ) + ( y + z x )  

Solve the equation and check. – 4x + = 6x –  

Solve the equation and check. 3x – 10 = 5x – 20  

Combine the like terms.  

Express the ratio in lowest terms.