What is the best way to determine whether a given point is a solution to a system of equations?

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

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b