15/22-(4-1 5/6):х = 1 5/33
15/22 - 2 1/6:х = 1 5/33
15/22 - 13/6:х = 38/33
-13/6:х = 38/33-15/22
-13/6:х = 76/66-45/66
-13/6 :х = 31/66
х = -13/6:31/66
х = -13/6*66/31
х = -143/31
Проверяем:
15/22-(4-1 5/6):(-143/31) = 15/22 - 13/6:(-143/31) = 15/22-13/6*(-31/143) =
= 15/22+31/66 = 45/66+31/66 = 76/66 = 38/33 = 1 5/33
ответ: -143/31.
15/22-(4-1 5/6):х = 1 5/3315/22 - 2 1/6:х = 38/3315/22 - 13/6:х = 38/33
-13/6:х =38/33 - 15/22
-13/6:х = (38*2 - 15*3)/66
-13/6 : х = 31/66
13/6:х = -31/66
13/6Х = -31/66
Х= -143/31
Проверка
15/22-(4-1 1/6):( -143/31) = 38/33
15/22 - ( 13/6 ) : (-143/31) = 38/33
15/22 + 403/858 = 38/33
(15*39+403) / 858 = 38/33
988/858 = 38/33
сократим на 26
38/33 = 38/33
15/22-(4-1 5/6):х = 1 5/33
15/22 - 2 1/6:х = 1 5/33
15/22 - 13/6:х = 38/33
-13/6:х = 38/33-15/22
-13/6:х = 76/66-45/66
-13/6 :х = 31/66
х = -13/6:31/66
х = -13/6*66/31
х = -143/31
Проверяем:
15/22-(4-1 5/6):(-143/31) = 15/22 - 13/6:(-143/31) = 15/22-13/6*(-31/143) =
= 15/22+31/66 = 45/66+31/66 = 76/66 = 38/33 = 1 5/33
ответ: -143/31.
15/22-(4-1 5/6):х = 1 5/33
15/22 - 2 1/6:х = 38/33
15/22 - 13/6:х = 38/33
-13/6:х =38/33 - 15/22
-13/6:х = (38*2 - 15*3)/66
-13/6 : х = 31/66
13/6:х = -31/66
13/6Х = -31/66
Х= -143/31
Проверка
15/22-(4-1 1/6):( -143/31) = 38/33
15/22 - ( 13/6 ) : (-143/31) = 38/33
15/22 + 403/858 = 38/33
(15*39+403) / 858 = 38/33
988/858 = 38/33
сократим на 26
38/33 = 38/33