Pre-Algebra Examples

$12 a b - 28 b c + 20 a c$

Step 1

Factor $4$ out of $12 a b$ .

$4 (3 a b) - 28 b c + 20 a c$

Step 2

Factor $4$ out of $- 28 b c$ .

$4 (3 a b) + 4 (- 7 b c) + 20 a c$

Step 3

Factor $4$ out of $20 a c$ .

$4 (3 a b) + 4 (- 7 b c) + 4 (5 a c)$

Step 4

Factor $4$ out of $4 (3 a b) + 4 (- 7 b c)$ .

$4 (3 a b - 7 b c) + 4 (5 a c)$

Step 5

Factor $4$ out of $4 (3 a b - 7 b c) + 4 (5 a c)$ .

$4 (3 a b - 7 b c + 5 a c)$