Boris77 wrote:
Do not agree with silly chart. With no brackets or other distractions, operations go left to right, add then multiply. Answer is 35. Unless you are from a country that writes right to left.
Boris
Mathematical operations have a specific order of usage.
“The order of operations says that operations must be done in the following order: P — parentheses, E — exponents, M — multiplication, D — division, A — addition, and S — subtraction.” [Mnemonic is PEMDAS]SOURCE:
https://content.byui.edu › Math-1-6-1
Order of Operations
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Applying the Order of Operations (PEMDAS)
The order of operations says that operations must be done in the following order: parentheses, exponents, multiplication, division, addition, and subtraction.
Parentheses [or brackets]
When there are parentheses, whatever is inside must be done first. The stuff inside the parentheses may also need to be broken down according to the order of operations as well. It is even possible to have parentheses within parentheses. In cases like this, work from the inside out.
Exponents
If there are exponents in the equation, these would be done next.
Multiplication and Division [left to right]
Multiplication and division can be done together. In other words, it doesn’t matter if you do division or multiplication first, but they must be done after parentheses and exponents and before addition and subtraction.
Addition and Subtraction [left to right]
Addition and subtraction also work together. You can do subtraction first, or you can do addition first. They are part of the same step, however, they can only be done after items in parentheses, exponents, and any multiplication and division.
SOURCE:
https://content.byui.edu/file/b8b83119-9acc-4a7b-bc84-efacf9043998/1/Math-1-6-1.html#