14
15b + 13c - 12b + 10c + 8 = 3b + 23c + 8
-b+5b-2b=2b
If: a = 2b+c Then: a-c = 2b And: b = (a-c)/2
8b + 11 - 3b = 2b + 2 5b + 11 = 2b + 2 5b - 2b = 2 - 11 3b = -9 b = -3
14
10ab + 15b = 5b (2a + 3)
(a + 2b)(a + 2b)
8a+2b
12c + 2b
15b + 13c - 12b + 10c + 8 = 3b + 23c + 8
=2b
15b+2-13 = 13b+6-4b 15b-11 = 9b+6 15b-9b = 6+11 6b = 17 b =17/6 or 2 and 5/6
13a
a + 2b = c a = c - 2b
a-b+a-b+2b+a = 4a
3Mgo+2B