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 = 85-((5*x)/10) // - 85-((5*x)/10)
(5*x)/10-x-85+12 = 0
-1/2*x-73 = 0 // + 73
-1/2*x = 73 // : -1/2
x = 73/(-1/2)
x = -146
x = -146
| 14=-6x-8x | | -6=p+8+6p | | -2(4t-2)+3t=4t-7 | | (29/x+3)+2x=10 | | n+5-1=4 | | -7x-4=-2x+1-4x | | -18=k+6-5k | | 40+10r=160 | | -9+6k=3 | | 3/8x5/12 | | 4n-28/3=2n-3 | | 25+18b=117 | | (2x/10)-(3-x)/14=((2+x)/5)-(1/2) | | 10(n-9)=-120 | | 10(n-9)=120 | | 2.5(4z-18)+12=0 | | 32+21b=145 | | (x/3)-8=-4 | | -2-6v=-20 | | -5(2t-4)+6t=4t-9 | | 26+17r=120 | | 28=7-3v | | 28=7-3v | | x^2+11x=-26 | | 35+28r=175 | | -7(5v+8)=34 | | -4(3t-5)+7t=2t-6 | | y-13=-5/3(x-7) | | p(4/5)= | | 2500=2000+3r | | -0.8x^2+14.4x+2=54 | | c=125/9 |