How do you simplify #3\cdot ( - 9) + ( - 2) \cdot ( 7#)?
1 Answer
Sep 30, 2016
Explanation:
When evaluating an expression with
#color(blue)"mixed operations"# there is an order of operations that must be followed.Follow the order as set out in the acronym PEMDAS.
#3xx(-9)+(-2)xx7larr" multiplication first"#
#=-27+(-14)larr" addition next"#
#=-27-14larr" now subtract"#
#=-41#