Х-3,2=2 7/15 8,4: x=2 1/3 0_6x=9/20 : d

A) x - 3,2 = 2 7/15
x = 2 7/15 + 3,2
x = 2 7/15 + 3 1/5
x = 2 7/15 + 3 3/15
x = 5 10/15 = 5 2/3
б) 8,4 : x = 2 1/3
x = 8 2/5 : 2 1/3
x = 42/5 * 3/7
x = 6/5 * 3/1
x = 3 3/5 = 3,6
в) 0 - 6x = 9/20
6x = 9/20 + 0
6x = 9/20
x = 9/20 : 6
x = 9/20 * 1/6
x = 3/20 * 1/2
x = 3/40