23)в) виносим
1,63(2,49-2,12+1,63)=1,63(2)=3,26
г)0,16*1,25(6,41-1,25-0,16)=0,16*1,25(5)=0,8*1,25=1
24 в) виносим числа
(1,7(1,6+1,7))/(3,4(8,7-3,4))=(1,7*3,3)/(3,4*5,3)=5,61/18,02=0,3
г) (7/15(13/9-8/9))/(7/5(7/5-1/15))
(7/15(5/9))/(7/5(4/3))=(7/27)/(28/15)=5/36=0,13