4 * (х - 1 целая 1/15) + 6 1/5 = 9 целых 1/3

4*x - 4*16/15 + 31/5 = 28/3

4x = 28/3+64/15-31/5

4x = (140+64-93) / 15

4x = 111/15

x = 111/60

x=1 целая 17/20

4 * (х - 1 целая 1/15) + 6 1/5 = 3*1

4 * (х - 1 целая 1/15) + 6 1/5 = 3

4 * (х - 1 целая 1/15) + 6*1/5=3

4 * (х - 1 целая 1/15) + 6/5=3

4*x-4*1/15+6/5=3

4x-4*1/15+6/5=3

4x-4/15+6/5=3

4x+1*-4+3*6/15=3

4x + - 4+3*6/15=3

4x + - 4+18/15=3

4x+14/15=3

4x=3-14/15=3

4x=15*3-14/15

4x=45-14/15

4x=31/15

x=31/15 : 4

x=31/15 * 1/4

x=31*1/15*4

x=31/60