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

Algebra ->  Expressions -> 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       Log On


   

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) About Me  (Show Source):
You can put this solution on YOUR website!
9%2A%28-70%2B%28-77%2B43%29%29 Start with the given expression.


9%2A%28-70%2B-34%29 Add -77 and 43 to get -34.


9%2A%28-104%29 Add -70 and -34 to get -104.


-936 Multiply 9 and -104 to get -936.


So 9%2A%28-70%2B%28-77%2B43%29%29=-936



note: you can simply use a calculator to check each step.

Answer by oscargut(2103) About Me  (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