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)
a-((5*(a-1))/6)-(4/5) = 5*a+15/3 // - 5*a+15/3
a-((5*(a-1))/6)-(5*a)-(4/5)-(15/3) = 0
(-5/6)*(a-1)+a-5*a-4/5-5 = 0
a-5/6*(a-1)-5*a-4/5-5 = 0
(-5/6*5*(a-1))/5+(5*a)/5+(-5*5*a)/5-4/5+(-5*5)/5 = 0
5*a-5/6*5*(a-1)-5*5*a-5*5-4 = 0
5/6*a-25*a-25-4+25/6 = 0
25/6-145/6*a-25-4 = 0
1/6-145/6*a-25 = 0
-145/6*a-149/6 = 0
(-145/6*a-149/6)/5 = 0
(-145/6*a-149/6)/5 = 0 // * 5
-145/6*a-149/6 = 0
-145/6*a-149/6 = 0 // + 149/6
-145/6*a = 149/6 // : -145/6
a = 149/6/(-145/6)
a = -149/145
a = -149/145
| 3x(x+2)+(x-1)=x+1 | | 2(x^2+16)=40 | | 100x+23.11=9 | | 2.5x=(5x-3)+1x | | 8x^2+14x+13=0 | | 3x-4+5x=4(2x+2) | | 4[8-5x]+2x=40 | | 5x^2+x^2=6 | | x+2(5x-3)=x(7-x) | | 125x=3304 | | 7x+9x-8x-5=35 | | 21=ab^1 | | 4x+3y=3x+2y | | 10x+3=3(3x-2)+9 | | x+1+x/x+1 | | x+x+5x+25x=2x-60 | | 2x^2+8=16 | | (7x+4)/12=11 | | x=4y^2-8 | | 4x+3y=3x+4y | | 100x-99=101 | | 2x+-5=4y+25 | | 3x+6x+12=12 | | 7a+1+a+1-10a= | | 6*170+x=1900 | | (x-30)+(4x-310)+1/2x+14=180 | | 27n-60=-3x | | 9(2x+1)=3x-9x | | ax+b=cfinda | | 11(8-y)+3=-3(y-3)-4 | | 125x-250=0 | | 81x^3=64x^2 |