 nazaroline 
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                                                nazaroline 
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                                                20.11.2020 18:05
                                                
                                                tatleb 
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                                                gc121 
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                                             Air100Cake 
                                                20.11.2020 18:06
                                                
                                                Air100Cake 
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                                                20.11.2020 18:06
                                                
                                                Ksushlalka 
                                                20.11.2020 18:06
                                             tanyakill9087 
                                                20.11.2020 18:06
                                                
                                                tanyakill9087 
                                                20.11.2020 18:06
                                             UchenikH 
                                                20.11.2020 18:06
                                                
                                                UchenikH 
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                                             natalijasovap08pz3 
                                                20.11.2020 18:06
                                                
                                                natalijasovap08pz3 
                                                20.11.2020 18:06
                                            
350:х+10=80
350:х=70
х=350:70
х=5
800-(y•8-20)=250:10•4
780-8у=100
8у=680
у=85
350:х+10=560:7
350:х+10=80
350:х=80-10
350:х=70
Х=350:70
Х=5
800-(у*8-20)=100
у*8-20=800-100
у*8-20=700
у*8=700-20
у*8=680
у=680:8
у=85