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

1 Answer
Mar 31, 2018

Answer:

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

Explanation:

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#