Question

28,251.31-X=23,201.06 WHAT IS X??

Answer 1

X = 5050.25 

transfer the x to the other side so that it will be positive and the 23,201.06 to the other side subtracting. So you have 28,251.31 - 23,201.06 = x 
                                                              5050.25 =x

Answer 2

28,251.31 - x = 23,201.06
subtract 28,251.32 from both sides
-x = - 5,050.26
Divide both sides by -1
x = 5,050.26