x = 10 1/2
x = 1 1/6
Пошаговое объяснение:
12-x=1 1/2
12-1 1/2 = x
10 1/2 = x
5 8/9 + x = 7 1/18
x = 7 1/18 - 5 8/9
x = 127/18 - 53/9
x = 127/18 - 106/18
x = 21/18
x = 1 3/18
x = 10 1/2
x = 1 1/6
Пошаговое объяснение:
12-x=1 1/2
12-1 1/2 = x
10 1/2 = x
x = 10 1/2
5 8/9 + x = 7 1/18
x = 7 1/18 - 5 8/9
x = 127/18 - 53/9
x = 127/18 - 106/18
x = 21/18
x = 1 3/18
x = 1 1/6