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)
5*(8-(5*d)) = 65 // - 65
5*(8-(5*d))-65 = 0
5*(8-5*d)-65 = 0
5*(8-5*d)-65 = 0
-25*d-25 = 0
-25*d-25 = 0
-25*d-25 = 0 // + 25
-25*d = 25 // : -25
d = 25/(-25)
d = -1
d = -1
| 2(6+7m)=-156 | | 2(10-6n)=-88 | | 7(10-7t)=-175 | | 7(-9+3n)=84 | | 2(-4+n)=-30 | | 6(-9+3a)=54 | | 2(10+7t)=188 | | 5(7n-6)=390 | | 7(-4w+10)=-42 | | 5(6k-6)=240 | | 6(-2b-7)=-174 | | 2(7d-10)=-6 | | 4(-7m-3)=44 | | 7(-4n+7)=-147 | | 2(-6-6b)=-72 | | 7(-7a-7)=-147 | | 7(-3+5k)=-56 | | 3(-5t-8)=-174 | | 5(-8-6t)=-370 | | 7(4+4n)=-112 | | 6(5-5d)=-180 | | 3(4+4m)=96 | | 5(1a+7)=40 | | 3(-8-5k)=-39 | | 6(-2k+6)=36 | | 3(4+4t)=12 | | 5(1w-3)=20 | | 6(7+m)=-18 | | 7(2+6m)=14 | | 6(-6d+4)=168 | | 7(9-6d)=-273 | | 4(-4b+10)=-88 |