Условие:

Реши уравнения.
x + 60 = 2000 : 8;
720 : x = 20;
350 : x = 50;
x * 30 = 150.

x + 60 = 2000 : 8
x + 60 = 250
x = 25060
x = 190
 
720 : x = 20
x = 720 : 20
x = 36
 
350 : x = 50
x = 350 : 50
x = 7
 
x * 30 = 150
x = 150 : 30
x = 5