How to solve for x using this problem?

Write two subtraction equations that are equivalent to 5 + 12 = 17.

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.