Evaluate
-45
Factor
-45
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12x-24-3\left(3x+5\right)-\left(3x+6\right)
Use the distributive property to multiply 6 by 2x-4.
12x-24-9x-15-\left(3x+6\right)
Use the distributive property to multiply -3 by 3x+5.
3x-24-15-\left(3x+6\right)
Combine 12x and -9x to get 3x.
3x-39-\left(3x+6\right)
Subtract 15 from -24 to get -39.
3x-39-3x-6
To find the opposite of 3x+6, find the opposite of each term.
-39-6
Combine 3x and -3x to get 0.
-45
Subtract 6 from -39 to get -45.
3\left(4\left(x-2\right)-\left(3x+5\right)-\left(x+2\right)\right)
Factor out 3.
-45
Simplify.
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