Following PEMDAS is crucial to solving these. Please Excuse My Dear Aunt Sally
P - Parenthesis
E - Exponents
M - Multiplication
D - Division
A - Addition
S - Subtraction
Multiplication/Division and Addition/Subtraction are interchangeable.
Now then, number 1 has the following:
![4-2*409-8*96](https://tex.z-dn.net/?f=%204-2%2A409-8%2A96%20)
There are no parenthesis or exponents, but there is multiplication, so we will start with multiplying. There are two multiplication expressions in the problem.
![-2 * 409 = -818](https://tex.z-dn.net/?f=%20-2%20%2A%20409%20%3D%20-818%20)
![-8 * 96 = -768](https://tex.z-dn.net/?f=%20-8%20%2A%2096%20%3D%20-768%20)
Since you did that, your answer has been simplified to:
![4-818-768](https://tex.z-dn.net/?f=%204-818-768%20)
Now, all you have to do is combine your like terms. Since every term is alike, you can combine the whole expression.
![4-818-768 = -1582](https://tex.z-dn.net/?f=%204-818-768%20%3D%20-1582%20)
So, your final answer would be:
![4-2*409-8*96 = -1582](https://tex.z-dn.net/?f=%204-2%2A409-8%2A96%20%3D%20-1582%20)
Hopefully with this information, you can solve the rest. If you have any questions, let me know.