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:
[tex] 4-2*409-8*96 [/tex]
There are no parenthesis or exponents, but there is multiplication, so we will start with multiplying. There are two multiplication expressions in the problem.
[tex] -2 * 409 = -818 [/tex]
[tex] -8 * 96 = -768 [/tex]
Since you did that, your answer has been simplified to:
[tex] 4-818-768 [/tex]
Now, all you have to do is combine your like terms. Since every term is alike, you can combine the whole expression.
[tex] 4-818-768 = -1582 [/tex]
So, your final answer would be:
[tex] 4-2*409-8*96 = -1582 [/tex]
Hopefully with this information, you can solve the rest. If you have any questions, let me know.