Insert a digit to make numbers that are divisible by 6 if it is possible

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An equation is shown below: 3(4x − 2) = 1 which of the following correctly shows the first two steps to solve this equation?

What is the missing step in this proof ?

Logan wants to know how many skateboards have defective parts. he inspects 20,000 skateboards and keeps track of the number of defects per board. use his probability distribution table to find the expected value for defects on a skateboard.