If it's not what You are looking for type in the equation solver your own equation and let us solve it.
r in (-oo:+oo)
-12 = (1/18)*r // - (1/18)*r
-((1/18)*r)-12 = 0
(-1/18)*r-12 = 0
-1/18*r-12 = 0 // + 12
-1/18*r = 12 // : -1/18
r = 12/(-1/18)
r = -216
r = -216
| 4x-4x-20=5 | | -3(12-m)=-(m-8) | | 8x+4=2x-(7-6x) | | u^2+12u=1 | | -26-2n=16 | | V+6.6=4.6 | | 8/4x-3=2/x | | 5y-x=39 | | 11(z+2)-3(z-3)=4(z-3)+3(z-2) | | 5x+y=59 | | m^2+6m-41=0 | | h+12.8=-12.8 | | 5/v=3/4 | | 4(54)=3(54-12)+90 | | -5x+80=45 | | 3/b=7/4 | | v^2+10v-17=0 | | 4x=3(x-12)+90 | | 5x+1=(-5x)+10 | | 4[7-(-2x-9)]=72x+352 | | 8/4=3/r | | 4x-12=4y | | 8/4x-3 | | 7n^2-1=699 | | -2x-24=-7x-9 | | 165+2x=215+x | | 14x^2+14=60x-12 | | 0.04(x+9)=0.02(2x+9)+0.18 | | (3-2i)(-4+i)=0 | | 6(3)=(x)(5)-(x)(2) | | 8=v+7v | | 8z+4z-18=9z-12-1z+1 |