Пошаговое объяснение:
7/12+1/50=(7*50+1*12)/600=362/600=181/300
9/88+3/11=(9*1+3*8)/88=33/88=3/8
7/23−3/7 = (7*7-3*23)/161= -20/161
19/65+4/13 = (19*1+4*5)/65=39/65=3/5
9/88+3/11=3/8
7/23-3/7=20/161
19/65+4/13=3/5
Пошаговое объяснение:
7/12+1/50=(7*50+1*12)/600=362/600=181/300
9/88+3/11=(9*1+3*8)/88=33/88=3/8
7/23−3/7 = (7*7-3*23)/161= -20/161
19/65+4/13 = (19*1+4*5)/65=39/65=3/5