SOLUTION: Hi, I am attempting to solve an equation with parentheses inside of brackets. The problems are similar to 9[-7-(77-43)] I know to solve the parenthases first so I have and I can

Question 147602: Hi,
I am attempting to solve an equation with parentheses inside of brackets. The problems are similar to 9[-7-(77-43)]
I know to solve the parenthases first so I have and I can chane the signs of the terms by doing the following:
9[-70+(-77+43)]
9[-70+34]
9[-36]
-324
This answer seems incorrect but I am unsure where I went wrong. Can you help?
Thank you very much.

Found 2 solutions by jim_thompson5910, oscargut:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given expression.

Add and to get .

Add and to get .

Multiply and to get .

So

note: you can simply use a calculator to check each step.
Answer by oscargut(2103) (Show Source): You can put this solution on YOUR website!
9[-70+(-77+43)] (good)
9[-70+34] (wrong) corrrrect is 9[-70-34]
9[-104]=-936
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