 iae1512p0dn07 
                                                20.02.2021 08:29
                                                
                                                iae1512p0dn07 
                                                20.02.2021 08:29
                                             Alasp 
                                                20.02.2021 08:34
                                                
                                                Alasp 
                                                20.02.2021 08:34
                                             kozlovavika200 
                                                20.02.2021 08:35
                                                
                                                kozlovavika200 
                                                20.02.2021 08:35
                                             dianaandmasha 
                                                20.02.2021 08:36
                                                
                                                dianaandmasha 
                                                20.02.2021 08:36
                                             19557 
                                                20.02.2021 08:36
                                                
                                                19557 
                                                20.02.2021 08:36
                                             vikkkki1 
                                                20.02.2021 08:38
                                                
                                                vikkkki1 
                                                20.02.2021 08:38
                                             Шокер12 
                                                20.02.2021 08:44
                                                
                                                Шокер12 
                                                20.02.2021 08:44
                                            
1) 64:с = 4
c = 64 : 4
c = 16
2) x - 50 = 15*6
x - 50 = 90
x = 90 + 50
x = 140
3) a : 4 = 40 * 3
a : 4 = 120
a = 120 × 4
a = 480
4) y:10 = 700:7
y:10 = 100
y = 100 × 10
y = 1000