Can someone explain how to solve 3/4 + 7/8 + 1/2 as a mixed number in simplest form

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

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.

Find the value of x. give reasons to justify your solutions! c ∈ ae