Решить примеры.22/15+41/7: (12/5-25/7)=? 19/11+40/19*(9/5-11/8)=? .это дроби,большое ,

22/15+41/7:(12/5-25/7)=

1) 12/5-25/7=84/35-125/35=-41/35

2) 41/7+(-41/35)=205/35-41/35=164/35=4 24/35

3) 22/15+ 4 24/35=22/15+164/35=154/105+492/105=646/105=6 16/105

 19/11+40/19*(9/5-11/8)

1) 9/5- 11/8=72/40-55/40=17/40

2) 40/19* 17/40=17/19

3) 19/11+17/19=361/209+187/209=548/209=2  130/209

12/5-25/7=84/35-125/35=-41/35

41/7:(-41/35)=-41/7*(-35/41)=-5

22/15+(-5)=7/15

9/5-11/8=72/40-55/40=17/40

40/19*17/40=17/19

19/11+17/19=361/209+187/209=548/209=2 130/209