12a + 8b....common factor is 4
4(3a + 2b) <==
The answer is 21 + 4x.
You find this answer by adding up all the sides.
9+12+4x= 21+4x ... you don't add 4x because it has a variable that we do not know of the value.
Step-by-step explanation:
THE G.C.F IS 9W^2 AS ALL THE THREE MONOMIALS CAN ONLY BE DIVIDED BY IT..AFTER THAT IT WILL CHANGE IN DECIMAL/FRACTIONAL FORM.