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)
13 = x/20 // - x/20
13-(x/20) = 0
13-1/20*x = 0 // - 13
-1/20*x = -13 // : -1/20
x = -13/(-1/20)
x = 260
x = 260
| 8x-36=4x+2 | | V+3=9 | | 5x/(1/3) | | 49g=7 | | 4/n^2=7/n+2 | | 6x-7=3-4x | | -6x+7=19 | | y=x^2+5x-50 | | 5-t=1 | | 3x=2y+1 | | 3(5-2h)+9=31 | | z-d=eford | | 1/3x+5=6 | | C+2=7 | | x/6-6=-7 | | 6(2x+4)-3(2x+3)=45 | | x=2(-x) | | 8*4=(l*7)-(l*3) | | 5(3x+4)+4(2x-2)=127 | | 22=40+m | | x*x-3x+1=0 | | x*x-3x+1=0 | | Z+[z-6]-2=-10 | | 4f=20 | | (x+3)(2x-1)+3=2x^2-3x-1 | | 2(x+2)+3(x-4)=27 | | 6-v=2 | | 7x+5=2x+25 | | 12-z=6 | | 20-b=15 | | 7x+7=3x-7 | | (n+13)= |