36/9=4 банки в день расходовали
4*7=28 банок за неделю
9n * 13 = 351
9n = 351:13
9n = 27
n = 3
Ответ:
12 2/19 - ( 5 17/19 + 4 14/19 ) = 1 9/19
1) 5 17/19 + 4 14/19 = 112/19 + 90/19 = (112 + 90)/19 = 202/19 = 10 12/19
2) 12 2/19 - 10 12/19 = 230/19 - 202/19 = (230 - 202)/19 = 28/19 = 1 9/19
Пошаговое объяснение:
<span>74,62-58,025+(-34,31)-(-56,78)-(+39,065)=0</span>
<span>74,62-58,025=16.595</span>
<span>16.595-34.31=-17.715</span>
<span>-17.715+56.78=39.065</span>
<span>39.065-39.065=0</span>