a. Use the inclusion/exclusion principle.

b. By definition of conditional probability,

Answer:
13x
Step-by-step explanation:
you would just add the 2 numbers together and then keep the variable. if you know the variable (if there’s a sheet to go off of) then multiply and add but otherwise it’s just 8 + 5 then add an x. 13x
Answer:
-6x+26
Step-by-step explanation:
6x+21-12x+5
-6x+26
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