If it's not what You are looking for type in the equation solver your own equation and let us solve it.
a in (-oo:+oo)
2*a+6 = 5*a+15 // - 5*a+15
2*a-(5*a)-15+6 = 0
2*a-5*a-15+6 = 0
-3*a-9 = 0 // + 9
-3*a = 9 // : -3
a = 9/(-3)
a = -3
a = -3
| 2X^3+3X^2+2X+3=0 | | 7-m=-2m+3 | | -3w+8=4-w | | 7a+6=-2a+105 | | -6-6x=5x-116 | | 7-6a=6a-77 | | 7b-7=-3b+73 | | 4x-8=0+3x | | b+1=-9+2b | | -9+2x=-4x+9 | | -4d-6=7d-28 | | 2+2a=6a-22 | | -w-8=6w+27 | | 2b+10=25-b | | -3+7k=k+33 | | 5x+1=4x+13 | | 3w-9=7w+27 | | 7a+8=4a-25 | | -3d+10=4d+73 | | 2+2w=-3w+47 | | -5k+5=-116+6k | | 32.663=p+11 | | 2b-5=7b-65 | | -3m-10=-38+m | | -5-3t=t-41 | | -2a+5=a+17 | | -6m-8=-m-58 | | X+X+36+3x-37=989 | | -4b+10=3b+38 | | 6x+6=72-5x | | 5z-6=-42+9z | | k+3=-69+7k |