
Andrew M. answered 02/11/18
Tutor
New to Wyzant
Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors
12 + 18
12 = 2*2*3
18 = 2*3*3
Common factors are 2, 3, 6
12+18 = 2(6 + 9)
= 3(4 + 6)
= 6(2 + 3)
Generally we take out the Greatest common factor, in this case 6.
So the answer you probably want is: 12+18 = 6(2 + 3)