Show how you solve the following two equations:
x – 15 = 32
x – 7.2 = 23.1

Х - 15 = 32
х = 32 + 15
x = 47 (answer)

47 - 15 = 32
        32 = 32

х - 7.2 = 23,1
х = 23,1 + 7.2
х = 30,3 (answer)

30,3 - 7,2 = 23,1
         23,1 = 23,1