Решите :. 6 целых 1/7 поделить на 1/7 -4целых 3/5*15/23+(1целая

(6 1/7)(1/7)-(4 3/5)(15/23)+(1 1/8)(1/8)=
=(43/7)(1/7)-(23/5)(15/23)+(9/8)(1/8)=
=(43/7)(7/1)-(23/5)(15/23)+(9/8)(8/1)=
=(301/7)-(345/115)+(72/8)=
=43-3+9=49
По деяньям:
(6 1/7)(1/7)=43/71/7=43/77/1=301/7=43
(4 3/5)(15/23)=23/515/23=345/115=3
(1 1/8)(1/8)=9/81/8=9/88/1=72/8=9
43-3+9=49