Parenthesis
Exponent
Multiplication
Division
Addition
Subtraction
According to this order focus on your parenthesis first. (12-6)=6. After that the brackets become the second pair of parenthesis. So [6+3]=9. The brackets work like parenthesis so you have to multiply the -8[9]=-72. After that you add the -72+4=-68. Hope this helps.
Parenthesis
Exponent
Multiplication
Division
Addition
Subtraction
According to this order focus on your parenthesis first. (12-6)=6. After that the brackets become the second pair of parenthesis. So [6+3]=9. The brackets work like parenthesis so you have to multiply the -8[9]=-72. After that you add the -72+4=-68. Hope this helps.
