Respuesta :

Answer:31


Step-by-step explanation:

You subtract 81 and 50


Answer:

The Answer is 31, Ill explain, Basically Z represents the number that can be added into 50 to give you 81, so 50+31=81 meaning that Z will represent 31.

Step-by-step explanation:

1.50+z=81

2.81-50=31

3.50+31=81