4+ 9x + 5x combining like terms. how do we get the answer?

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

Write the rational number in lowest terms 99/-15

Alogical argument that is presented in graphical form using boxes and arrows is called?