How do you evaluate the expression for z = 3.3?

He expression 2(l + w) is used to calculate the perimeter of a rectangle, where l is length and w is width. if the length is fraction 2 over 3 unit and the width is fraction 1 over 3 unit, what is the perimeter of the rectangle in units? fraction 2 over 3 unit 1 unit 1fraction 2 over 3 units 2 units

Can someone me out here and the tell me the greatest common factor

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76