1) 10=2*5 12=2*2*3 15=3*5 НОК = 2*2*3*5 = 60
60 : 10 = 6 - доп.множ. к 3/10 = (3*6)/(10*6) = 18/60
60 : 12 = 5 - доп.множ. к 5/12 = (5*5)/(12*5) = 25/60
60 : 15 = 4 - доп.множ. к 11/15 = (11*4)/(15*4) = 44/60
ответ: 3/10; 5/12; 11/15 = 18/60; 25/60; 44/60.
2) 18=2*3*3 12=2*2*3 16=2*2*2*2 НОК = 16*3*3 = 144
144 : 18 = 8 - доп.множ. к 1/18 = (1*8)/(18*8) = 8/144
144 : 12 = 12 - доп.множ. к 5/12 = (5*12)/(12*12) = 60/144
144 : 16 = 9 - доп.множ. к 3/16 = (3*9)/(16*9) = 27/144
ответ: 1/18; 5/12; 3/16 = 8/144; 60/144; 27/144.
3) 16=2*2*2*2 24=2*2*2*3 30=2*3*5 НОК = 16*3*5 = 240
240 : 16 = 15 - доп.множ. к 11/16 = (11*15)/(16*15) = 165/240
240 : 24 = 10 - доп.множ. к 17/24 = (17*10)/(24*10) = 170/240
240 : 30 = 8 - доп.множ. к 19/30 = (19*8)/(30*8) = 152/240
ответ: 11/16; 17/24; 19/30 = 165/240; 170/240; 152/240.
4) 15=3*5 20=2*2*5 25=5*5 НОК = 2*2*3*5*5 = 300
300 : 15 = 20 - доп.множ. к 13/15 = (13*20)/(15*20) = 260/300
300 : 20 = 15 - доп.множ. к 9/20 = (9*15)/(20*15) = 135/300
300 : 25 = 12 - доп.множ. к 24/25 = (24*12)/(25*12) = 288/300
ответ: 13/15; 9/20; 24/25 = 260/300; 135/300; 288/300.
Пошаговое объяснение: незачто
1) 10=2*5 12=2*2*3 15=3*5 НОК = 2*2*3*5 = 60
60 : 10 = 6 - доп.множ. к 3/10 = (3*6)/(10*6) = 18/60
60 : 12 = 5 - доп.множ. к 5/12 = (5*5)/(12*5) = 25/60
60 : 15 = 4 - доп.множ. к 11/15 = (11*4)/(15*4) = 44/60
ответ: 3/10; 5/12; 11/15 = 18/60; 25/60; 44/60.
2) 18=2*3*3 12=2*2*3 16=2*2*2*2 НОК = 16*3*3 = 144
144 : 18 = 8 - доп.множ. к 1/18 = (1*8)/(18*8) = 8/144
144 : 12 = 12 - доп.множ. к 5/12 = (5*12)/(12*12) = 60/144
144 : 16 = 9 - доп.множ. к 3/16 = (3*9)/(16*9) = 27/144
ответ: 1/18; 5/12; 3/16 = 8/144; 60/144; 27/144.
3) 16=2*2*2*2 24=2*2*2*3 30=2*3*5 НОК = 16*3*5 = 240
240 : 16 = 15 - доп.множ. к 11/16 = (11*15)/(16*15) = 165/240
240 : 24 = 10 - доп.множ. к 17/24 = (17*10)/(24*10) = 170/240
240 : 30 = 8 - доп.множ. к 19/30 = (19*8)/(30*8) = 152/240
ответ: 11/16; 17/24; 19/30 = 165/240; 170/240; 152/240.
4) 15=3*5 20=2*2*5 25=5*5 НОК = 2*2*3*5*5 = 300
300 : 15 = 20 - доп.множ. к 13/15 = (13*20)/(15*20) = 260/300
300 : 20 = 15 - доп.множ. к 9/20 = (9*15)/(20*15) = 135/300
300 : 25 = 12 - доп.множ. к 24/25 = (24*12)/(25*12) = 288/300
ответ: 13/15; 9/20; 24/25 = 260/300; 135/300; 288/300.
Пошаговое объяснение: незачто