Question

3(w-12)+30

Answer 1

First you should multiply the 3 into the w and -12

This will give you 3x - 36 + 30

Does that first step make sense?

Answer 2

The final step is to simplify
This can be done by coming the like terms

3x-6

Is it clear?

Answer 3

Luis: This problem might possibly be easier for you as well as for others to solve if you'd please provide the instructions that came with it: something like "Simplify 3(w-12)+30 using the distributive property and by combining like terms." Those are the two things that our friend @KirbyLegs has done.