If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
(12*x+2)/5-(3*x)+3 = (3-x)/4-3 // - (3-x)/4-3
(12*x+2)/5-((3-x)/4)-(3*x)+3+3 = 0
(12*x+2)/5-((3-x)/4)-3*x+3+3 = 0
(12*x+2)/5+(-1*(3-x))/4-3*x+3+3 = 0
(4*(12*x+2))/(4*5)+(-1*5*(3-x))/(4*5)+(-3*4*5*x)/(4*5)+(3*4*5)/(4*5)+(3*4*5)/(4*5) = 0
4*(12*x+2)-1*5*(3-x)-3*4*5*x+3*4*5+3*4*5 = 0
53*x-60*x-7+60+60 = 0
60-7*x-7+60 = 0
53-7*x+60 = 0
113-7*x = 0
(113-7*x)/(4*5) = 0
(113-7*x)/(4*5) = 0 // * 4*5
113-7*x = 0
113-7*x = 0 // - 113
-7*x = -113 // : -7
x = -113/(-7)
x = 113/7
x = 113/7
| 19x-12=4(6-4x) | | 3/8(p-8)+1/8p=-1/2(p-6) | | (f+4)(f-4)=0 | | 2x+2y-3xy=0 | | -2h+6h-7=6(h-2)-2h | | 300.00/15.00 | | (a+6)(a-5)=0 | | 3(x+7)=3x+15 | | (p-2)(p-9)=0 | | 48x+30y=12 | | (5(a-2)/6)-3a/2=5a/3 | | x-4+3=0 | | 3c+2s=26 | | 2xk-3k+2xr-3r=0 | | f(4)=5 | | 2p^2+3p+2=1 | | 1/3(8)x24 | | 10/11x-10/11=10 | | (x-2)/4+(5+2x)/3=12 | | 5(x-21)=-6 | | 5(x+21)=-6 | | c^2+c+41=67 | | 4z^2+4z+(1-4i)=0 | | 4z^2+4z+1-4i=0 | | (7/x)-(1/3)=(5/x) | | 4-(x+2)/4=x-4 | | 9x^3y^2+7y^2z-5y^3z=0 | | 2x-128/x^2-14 | | 3x-(x+3)/4=13 | | (13+x)/20-5x/2=(10+x)/5+(1-12x)/10 | | (Y)6+24-2=14 | | 13+x/20-5x/2=10+x/5+1-12x/10 |