Реши уравнения с обьяснен иием и проверкой 5'х#125: 5?

5*x= 125:5
5*x=25
x=25:5
x=5
Проверка: 5*5=25
125:5=25

4*х=28*10            х/4=10+28          5*х=125/5             266/х=100-93
4х=280                х/4=38                5х=25                   266/х=7 
х=280/4               х=38*4                х=25/5                   х=266/7
х=70                    х=152                 х=5                        х=38
4*70=28*10         152/4=10+28        5*5=125/5            266/38=100-93

х-28=4*10             40-х=28
х-28=40                х=40-28          
х=40+28               х=12        
х=68                    40-12=28               
68-28=4*10