Simplify the expression. Show all work

3(4x−5)+12x

To simplify the expression 3(4x - 5) + 12x, we will first distribute the 3 to the terms inside the parentheses:

3 * 4x = 12x
3 * -5 = -15

So the expression becomes:

12x - 15 + 12x

Next, we can combine like terms by adding the x terms (12x + 12x) and the constant terms (-15):

24x - 15

Therefore, the simplified expression is 24x - 15.