Question

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

Answer 1

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=1целая 17/20

Answer 2

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