Question

решите ур: х/72-13/72=29/72
второе:(29/42-а)-13/42=11/42
ТРЕТЬЕ:

Answer 1

1) x/72 - 13/72 = 29/72
x -13 = 29
x = 42
2) (29/42 -a) - 13/42 = 11/42
-a + 16/42 = 11/42
-a = -5/42
a = 5/42