Answer :

2d + 1/6 = 2d+ 6
0d = 6 - 1/6

This is not a valid solvable question
2d+1/6= 6(1/3d +1)
            =multiply                                            

2d+1/6 =6/3d + 6
    -1/6             -1/6

d*(2d)  = (2/d + 5.8) *d

2d^2 = 7.8
/2        /2

d^2 =3.9

d =1.9