номер 297, 298, 300.
только очень подробно, тогда дам 20 баллов, иначе пожалуюсь на ответ

большое спасибо!

а) 24 : 6 = 45/6 = (5*4)/(6*4) = 20/24б) 65 : 13 = 512/13 = (12*5)/(13*5) = 60/65в) 57 : 19 = 311/19 = (11*3)/(19*3) = 33/57г) 78 : 13 = 612/13 = (12*6)/(13*6) = 72/78298.4/5 = (4*2)/(5*2) = 8/10 = 0,88/25 = (8*4)/(25*4) = 32/100 = 0,321/4 = (1*25)/(4*25) = 25/100 = 0,253/50 = (3*2)/(50*2) = 6/100 = 0,0617/20 = (17*5)/(20*5) = 85/100 = 0,85300.а) 2 и 7 взаимно просты поэтому:5/7 = (5*2)/(7*2) = 10/141/2 = (1*7)/(2*7) = 7/14б) НОК(20, 15) = 607/20 = (7*3)/(20*3) = 21/601/15 = (1*4)/(15*4) = 4/60в) НОК(26, 39) = 783/26 = (3*3)/(26*3) = 9/785/39 = (5*2)/(39*2) = 10/78г) 11 и 8 взаимно просты8/11 = (8*8)/(11*8) = 64/885/8 = (5*11)/(8*11) = 55/88д) 13 и 11 взаимно просты7/13 = (7*11)/(13*11) = 77/1432/11 = (2*13)/(11*13) = 26/143е) НОК(22, 33) = 663/22 = (3*3)/(22*3) = 9/662/33 = (2*2)/(33*2) = 4/66ж) НОК(60, 540, 20) = 5407/60 = (7*9)/(60*9) = 63/5409/20 = (9*27)/(20*27) = 243/540з) НОК(105, 95, 63) = 598552/105 = (52*57)/(105*57) = 2964/59857/95 = (7*63)/(95*63) = 441/598561/63 = (61*95)/(63*95) = 5795/5985