Sample Mathematics Question and Answer - Homework Answers - Math - Geometry - Chemistry - Calculus Answers

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Mathematics

Question:

Evaluate [4 - (2 - 4(5 - 7) + 7)] + 5

Answer:

Evaluate [4 - (2 - 4(5 - 7) + 7)] + 5

To answer this question you need to remember that order of operations. If your teacher has given a rhyme/mind map for remembering this then use that.
I use BODMAS
B - brackets
O - of (or E for exponents, but there are none in this question)
D - division
M - multiplication
A - addition
S - subtraction

Step 1:   (5 - 7) = -2
Step 2:   (2 - 4(-2) + 7)
Step 3:   2 + 8 + 7 = 17
Step 4:   4 - 17 + 5 = -8

Always remember to work left to right when calculating

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