Question 1019550
if your original problem is 3 - 3 * 6 + 2, then:


multiply 3 * 6 to get 18.


the expression becomes 3 - 18 + 2.


since 3 - 18 is equal to -15, then your expression becomes -15 + 2.


since -15 + 2 is equal to -13, then your expression becomes -13.


the math apps are right.


the answer is -13.


the rule i know is PEMDAS.


that means to clear parentheses first, then exponents, then multiplication and division, then adding and subtracting.


here's a reference:


<a href = "http://www.purplemath.com/modules/orderops.htm" target = "_blank">http://www.purplemath.com/modules/orderops.htm</a>