Before we get started, it is good to remember PEMDAS - the acronym that tells you the order to carry out equations.
P = parentheses
E = exponents
M = multiplication
D = division
A = addition
S = subtraction
Knowing this, we should start by doing the equations within each parentheses.
[tex](-7 - -9) *(8 + 2)[/tex]
[tex](2) *(10)[/tex]
So we did the addition and subtraction pieces within each group leaving us with the above equation. Now let's multiply:
[tex](2)*(10) = 20[/tex]
20 is the answer.
