How do you evaluate #9+9*3-12-:2#?

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Answer 1 · 2018-03-31T11:49:41

#9+9*3-12-:2=30#

Follow the order of operations as indicated by the acronym PEMDAS.

Parentheses/brackets

Exponents/powers

Multiplication and Division in order from left to right.

Addition and Subtraction in order from left to right.

#9+9*3-12-:2#

There are no parentheses or exponents, so we start with multiplication and division.

Simplify #9*3# to #27#.

#9+27-12-:2#

Simplify #12-:2# to #6#.

9+27-6#

Simplify #9+27# to #36#.

#36-6#

Simplify #36-6# to #30#.

#30#