Пошаговое объяснение:
72/80 - (x - 12/80) = 15/80
72/80 - x + 12/80 = 15/80
84/80 - x = 15/80
x = 84/80 - 15/80
x = 69/80
x + 7/50 = 3/50 + 27/50
x + 7/50 = 30/50
x = 30/50 - 7/50
x = 23/50
116/125 - (41/125 + x) = 24/125
116/125 - 41/125 - x = 24/125
75/125 - x = 24/125
x = 75/125 - 24/125
x = 51/125
4/40 + y + 16/40 = 31/40 + 6/40
20/40 + y = 37/40
y = 37/40 - 20/40
y = 17/40
72/80 - 15/80 = х - 12/80,
47/80 + 12/80 = х,
59/80 = х,
х = 59/80
Пошаговое объяснение:
72/80 - (x - 12/80) = 15/80
72/80 - x + 12/80 = 15/80
84/80 - x = 15/80
x = 84/80 - 15/80
x = 69/80
x + 7/50 = 3/50 + 27/50
x + 7/50 = 30/50
x = 30/50 - 7/50
x = 23/50
116/125 - (41/125 + x) = 24/125
116/125 - 41/125 - x = 24/125
75/125 - x = 24/125
x = 75/125 - 24/125
x = 51/125
4/40 + y + 16/40 = 31/40 + 6/40
20/40 + y = 37/40
y = 37/40 - 20/40
y = 17/40
72/80 - 15/80 = х - 12/80,
47/80 + 12/80 = х,
59/80 = х,
х = 59/80
Пошаговое объяснение: