Question 1: If 2+2=x, what is the value of x?

Question 2: What is the value of x if x+8=9?

Question 3: Determine the value of x if (2+x)−7=9?

Question 4: There are 8 blue gems, 6 white gems, and 6 yellow gems on a bracelet. How many white and yellow gems are there? Explain your findings.