SOLUTION: how to solve this one 3(2w)-[w-z-(w+z)]? please show the solution :D thanyou.

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Question 146210: how to solve this one 3(2w)-[w-z-(w+z)]? please show the solution :D thanyou.
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
3(2w)-[w-z-(w+z)]
6w-[w-z-w-z]
6w-w+z+w+z
6w+2z
2(3w+z)