(3 2/3-1 2/7*5 4/9):(-2,5)
Ответ
9
(11/3 -9/7*49/9): (-5/2)=(11/3 -7)*(-2/5) = (-10/3)*(-2/5)=4/3=1 целая 1/3
ЛуНатик21:
неверно переписала, благодарю
Ответ
61
(3 2/3 - 1 2/7 * 5 4/9) : (- 2,5) = 4/3 = 1 1/3
1) 1 2/7 * 5 4/9 = 9/7 * 49/9 = 1/1 * 7/1 = 7
2) 3 2/3 - 7 = 3 2/3 - 6 3/3 = - 3 1/3
3) - 3 1/3 : (- 2,5) = - 10/3 : (- 25/10) = - 10/3 * (- 10/25) = 100/75 = 4/3 = 1 1/3
1) 1 2/7 * 5 4/9 = 9/7 * 49/9 = 1/1 * 7/1 = 7
2) 3 2/3 - 7 = 3 2/3 - 6 3/3 = - 3 1/3
3) - 3 1/3 : (- 2,5) = - 10/3 : (- 25/10) = - 10/3 * (- 10/25) = 100/75 = 4/3 = 1 1/3