
Robert J. answered 11/28/12
Certified High School AP Calculus and Physics Teacher
Do you mean [(5-3)3 + 12]/4 ?
Answer: [(5-3)3 + 12]/4 = (8+12)/4 = 5
Victoria M.
asked 11/28/12i dont get it
Robert J. answered 11/28/12
Certified High School AP Calculus and Physics Teacher
Do you mean [(5-3)3 + 12]/4 ?
Answer: [(5-3)3 + 12]/4 = (8+12)/4 = 5
Roman C. answered 11/28/12
Masters of Education Graduate with Mathematics Expertise
You need to use order of operations (PEMDAS)
(5-3)3 +12/4
= 23 + 12/4 Everything in Parentheses must be done first, using PEMDAS.
= 8 + 12/4 Exponents is done next.
= 8 + 3 Next is Multiplication and Division from left to right.
= 11 Finally, Addition and Subtraction from left to right.
PEMDAS is a mnemonic: Please Excuse My Dear Aunt Sally.
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