Решите номер 834 и 836
Пример записи: 1/6(3)+1/9(2)=3/18+2/18=5/18
В скобках число на которое умножаем

3/36 + 7/9(4) = 3/36+28/36=31/362/5(4)+3/20=8/20+3/20=11/201/6 (2)+5/12=2/12+5/12=7/1211/49+6/7 (7)=11/49+42/49=53/49=1 4/4913/24+5/8 (3)=13/24+15/24=28/24=1 4/28= 1 1/73/8(4)+6/32=12/32+6/32=18/32=9/166/120+3/20(6)=6/120+18/120=24/120=3/15=1/59/16(25)+50/100(4)=225/400+200/400=425/400=1 25/400=1 1/161/4(7)+4/7(4)+9/28=7/28+16/28+9/28=32/28=1 4/28=1 1/71/5(4)+3/10(2)+7/20=4/20+6/20+7/20=17/203/20(6)+7/30(4)+2/40(3)=18/120+28/120+6/120=52/120=13/3017/20(3)+23/30(2)+11/60=51/60+46/60+11/60=108/60=1 48/60=1 14/153/20(15)+7/30(10)+9/50(6)=45/300+70/300+54/300=169/3007/40 (21)+11/70 (12)+13/30 (28)=147/840+132/840+364/840=643/840