а) x + 1/8 = 3/5
x = 3/5 - 1/8x = 24/40 - 5/40x = 19/40
б) 1/3 + x = 5/12
x = 5/12 - 1/3x = 10/24 - 8/24x = 2/24x = 1/12
в) x - 3/20 = 1/5
x = 1/5 + 3/20x = 4/20 + 3/20x = 7/20
а) x + 1/8 = 3/5
x = 3/5 - 1/8
x = 24/40 - 5/40
x = 19/40
б) 1/3 + x = 5/12
x = 5/12 - 1/3
x = 10/24 - 8/24
x = 2/24
x = 1/12
в) x - 3/20 = 1/5
x = 1/5 + 3/20
x = 4/20 + 3/20
x = 7/20