Simplify 12 + 3 (2x - 3) + 4.

6x - 3

6x + 7

6x + 13

Remember the distributive property

a (b+c) = ab+ac

and commutative property

a+b=b+a

so

distribute first

3 (2x-3) = 3 (2x) + 3 (-3) = 6x-9

now we have

12+6x-9+4

move like terms together

6x+12-9+4

add like terms

6x+7

the answer is 6x+7

12 + 3 (2x-3) + 4

multiply 3 by 2x and by - 3

12 + 6x - 9 + 4

6x+7