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)
6*d+6 = -36 // + 36
6*d+6+36 = 0
6*d+42 = 0 // - 42
6*d = -42 // : 6
d = -42/6
d = -7
d = -7
| 10n+17=3n+5n | | -2/3m-2=-10/7 | | -9+6a=-36/5 | | 1/2+1/2a=3/16 | | 6/7w+5/9=-235/63 | | -6-2/7a=-374/63 | | -3/4+2/3x=-1/4 | | 4+4m=4 | | 1+4t=7/2 | | 1/3a+1/2=9/14 | | d-4=-39/11 | | 3/8+3t=9/8 | | 3n+1=-5/4 | | 6m-5/7=30/7 | | 7b-2=-15/4 | | -1/6+2/3n=-41/6 | | 3/4n-2/9=25/9 | | 3d+2/3=56/3 | | 7b+10=59 | | 9/10+4t=9/10 | | 4w+1/5=141/5 | | 5-5n=3 | | 2/9+6/7d=368/441 | | -5/8-4/5k=263/40 | | 5/7d-7/10=-136/105 | | 2+6a=11/2 | | 4/7n+10=790/77 | | -1/4k+10=43/4 | | -1/7m-4=-17/7 | | -1-7t=-13/6 | | 5k+1=-19/6 | | -2/7x-5=-325/63 |