6abc
1/6 is one fraction. You need at least two fractions to find something in common.
4/b-3 + 3/b = -2b/b-3 b = 1 or b = -4.5
7 over 7 = 1 Then -2b divided by 1 = -2b
8a+2b
12c + 2b
(a + 2b)(a + 2b)
=2b
a + 2b = c a = c - 2b
a-b+a-b+2b+a = 4a
3Mgo+2B
-b+5b-2b=2b
A + 2B cannot be simplified.