Simplify (ab+4a-6)+(ab+6)

$(a b + 4 a - 6) + (a b + 6)$

Step 1

Remove parentheses.

$a b + 4 a - 6 + a b + 6$

Step 2

Combine the opposite terms in $a b + 4 a - 6 + a b + 6$ .

Add $- 6$ and $6$ .

$a b + 4 a + a b + 0$

Add $a b + 4 a + a b$ and $0$ .

$a b + 4 a + a b$

Step 3

Add $a b$ and $a b$ .

$4 a + 2 a b$