Сократите дробь: а)5*12+12*7/12*14 б)7*7*2/15*14*17

Question

Сократите дробь: а)5*12+12*7/12*14 б)7*7*2/15*14*17

Answer 1

а)5*12+12*7/12*14 =61 1/2
5*12=60
12*7/12*14=144/98=1 23/49
60+1 23/49=61 23/49

б)7*7*2/15*14*17=98/3570=7/255