2007-09-10 05:05:18 · 6 answers · asked by imabrat 2 in Science & Mathematics ➔ Mathematics
multiplication/division (left to right)
then addition/subtraction(left to right)
18-4+7 = 21
2007-09-10 05:12:22 · answer #1 · answered by civil_av8r 7 · 0⤊ 1⤋
Order of Operations = PEMDAS=Parenthesis, Exponents, Multiplication & Division(In order of appearance), Addition & Subtraction(in order of appearance).
Therefore:
-9(-2)-6/3*2-(-7)=
18-6/3*2-(-7)=
18-2*2-(-7)=
18-4-(-7)=
18-4+7=
14+7=
21
2007-09-10 12:17:26 · answer #2 · answered by pashyon84music 2 · 1⤊ 0⤋
-9(-2)-6/3*2-(-7)
18-4+7 = 21
2007-09-10 12:34:03 · answer #3 · answered by carlo_042 2 · 0⤊ 0⤋
-9(-2)-6/3*2-(-7)
[-9(-2)] -{6/3}(2) -(-7)
= 18 -2(2) +7
= 21
2007-09-10 12:18:43 · answer #4 · answered by ironduke8159 7 · 0⤊ 0⤋
-9(-2)=18
-6/3*2=-4
-(-7)=7
18-4+7=21
star me if im correct!!!!!!!
2007-09-10 12:17:06 · answer #5 · answered by here2rock! 2 · 0⤊ 1⤋
http://www.mathgoodies.com/lessons/vol7/order_operations.html
2007-09-10 12:13:09 · answer #6 · answered by scooter321x 1 · 0⤊ 0⤋