Пошаговое объяснение:
1) x + 3/8 = 2 5/8
x = 2 5/8 - 3/8
x = 2 2/8
x = 2 1/4
2) x + 1 13/18 = 7 15/18
x = 7 15/18 - 1 13/18
x = 6 2/18
x = 6 1/9
3) x + 7/8 = 2 5/8
x = 2 5/8 - 7/8
x = 1 13/8 - 7/8
x = 1 6/8
x = 1 3/4
Пошаговое объяснение:
1) x + 3/8 = 2 5/8
x = 2 5/8 - 3/8
x = 2 2/8
x = 2 1/4
2) x + 1 13/18 = 7 15/18
x = 7 15/18 - 1 13/18
x = 6 2/18
x = 6 1/9
3) x + 7/8 = 2 5/8
x = 2 5/8 - 7/8
x = 1 13/8 - 7/8
x = 1 6/8
x = 1 3/4