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)
(3/5)*d+6 = (-2/7)*d+303/35 // - (-2/7)*d+303/35
(3/5)*d-((-2/7)*d)-(303/35)+6 = 0
(3/5)*d+(2/7)*d-303/35+6 = 0
31/35*d-93/35 = 0 // + 93/35
31/35*d = 93/35 // : 31/35
d = 93/35/31/35
d = 3
d = 3
| 1/2t+5=38-5t | | -8+d=-5d-5 | | 5k+3=65/9-3/7k | | -3/4n+1=41/36-1/3n | | -3/4a-7=a-7/4 | | 1/8-7m=4m-85/24 | | -2/3m-1/2=7m-55/18 | | -3/7d-3/7=-103/7+d | | 5/7a-1/5=4a-638/315 | | -3/7t+3=t+71/7 | | 4+6m=-3m+41/8 | | 3t+8=-51/5+2/5t | | -1/2m+4=-1/2m+4 | | 3/7w+10=4w+170/7 | | 5/7+5/6k=5/7k+15/14 | | 2y^2-15y+18-y^2+12y-36= | | 2+a=-2/3a+12/11 | | 3/5n+6/7=458/175+5n | | 1/6x-2/5=-42/55-1/3x | | 2/3w-2/7=-62/21+w | | a+1=9+2a | | -3/4+4t=t+75/44 | | 3/4+1/3x=2/5x+29/60 | | 3+3/7k=3/5k+65/21 | | 7n+3/4=5n-11/28 | | 2b+5=32/7+3/7b | | -7a-4/5=-2/3a-179/105 | | 3/4w+9=333/28+3/7w | | -1/3a-4/7=338/21+3a | | -6/7m+9=383/42+1/3m | | w-1/4=23/4+4w | | 2+m=-5m+62 |