If it's not what You are looking for type in the equation solver your own equation and let us solve it.
d in (-oo:+oo)
15 = (5/3)*(d-6) // - (5/3)*(d-6)
15-((5/3)*(d-6)) = 0
(-5/3)*(d-6)+15 = 0
15-5/3*(d-6) = 0
15-5/3*(d-6) = 0
25-5/3*d = 0
25-5/3*d = 0
25-5/3*d = 0 // - 25
-5/3*d = -25 // : -5/3
d = -25/(-5/3)
d = 15
d = 15
| -8p-24=16 | | -3j+4/-6=12 | | 5=-x^2+2x+3 | | 2x-2x^2+4=0 | | 3(n-4)/2 | | x-46=3x+3(2x-2) | | 3(n-4)+3=12 | | 12*x+(12/2)^2 | | 4+(x-23)/5=(x-3)/7 | | 28x^3+7x=1 | | 10x-5y-3x-2y= | | t/2-9=7 | | -x+2y=20 | | 7(x-8)-(x-7)=x+7-(x-6) | | 2f-f-f+3f= | | 30x-15=5x+10+2x | | 5y+2y=6y+7 | | 4pq-7qp= | | 11uv-8uv= | | 8(y-3)=7y-8 | | y=40-x | | 4x^2+7g+3=0 | | -3/4(2x-1) | | -3/4y=-6 | | -3/4(2x) | | r+8/-3=-2 | | x-7y=19fory | | x/12-9=-11 | | 2f-12/3=4f+10 | | R^2+R-156=0 | | -14/4m=-7/2 | | 2f-12=4f+10 |