найди число х для которого верно равенство:
а)х+1/8=3/5
б)1/3+х=5/12
в)х-3/20=1/5

х + 1/8 = 3/5
х = 3/5 - 1/8 = 24/40 - 5/40 = 19/40
х = 19/40

1/3 + х = 5/12
х = 5/12 - 1/3 = 5/12 - 4/12 = 1/12
х = 1/12

х - 3/20 = 1/5
х = 1/5 + 3/20 = 4/20 + 3/20 = 7/20
х = 7/20