Rule 21:
Expressions in parenthesis are treated as one number and must be calculate first.

Problem 1: Calculate tex2html_wrap_inline10.

Answer: The answer is 3.

Since there parenthesis in the problem. Work from left to right. The parenthesis tex2html_wrap_inline12 can be simplified to - 2. The problem tex2html_wrap_inline10
can now be written tex2html_wrap_inline16 .

The remaining parenthesis tex2html_wrap_inline18 contains multiplication and subtraction. Complete the multiplication first. tex2html_wrap_inline20 can be modified to tex2html_wrap_inline22 . The problem tex2html_wrap_inline10 can now be written as tex2html_wrap_inline26 which in turn can be simplified to 3+(-4)+4=3.

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Author: Nancy Marcus

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