61/5: (3 2/5-1 1/3) -3 2/3 * 1 1/2-1 2/3*1 1/2 - вопрос №7093082615325113323112123112 от vihareva08 08.09.2020 08:46

Question

Математика: 61/5: (3 2/5-1 1/3) -3 2/3 * 1 1/2-1 2/3*1 1/2

vihareva08 · Answer

А) -6 1/5 / (3 2/5-1 1/3)
1) 3 2/5-1 1/3=3 6/15-1 5/15= 2 1/15=31/15
2) -6 1/5 / 31/15= -31/5 / 31/15 -31/5*15/31=-3

в) -3 2/3*1 1/2-1 2/3*1 1/2
1) -3 2/3* 1 1/2=-11/9*3/2=-11/6
2) 1 2/3* 1 1/2=6/3*3/2=3
3) -11/6-3=-1 5/6-3=-4 5/6