answer was given in picture but there is not a good explanation on how to do the problem

1:54 12:35 30s 1x C CC Knowledge Check 01 Susan, a recent college graduate, makes a base salary of $70,000 per year. Susan has federal income tax withholding of $12,000, and state tax withholding of $4,000. Employers are required to withhold a 6.2% Social Security tax and a 1.45% Medicare tax. What is Susan's take-home pay? Multiple Choice $48,645