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)
x/18 = -13 // + 13
x/18+13 = 0
1/18*x+13 = 0 // - 13
1/18*x = -13 // : 1/18
x = -13/1/18
x = -234
x = -234
| 3056890000.00-15000000.00x=5 | | 1/4(x+2)=3x-5(2-x)-5 | | -8y+8=-9y+1 | | 13=9-x^5 | | 7x-8y-2y+10x+6= | | -r^2+12r-32=0 | | X-2/3=4 | | z^2+16z+68=0 | | 5x+9y=-23 | | 3x+1=7x+9 | | -2/3(x+3)=12 | | 13(-12+13)=13 | | 3/2(3x+3)=4(1-3x)+17 | | 23-(-17)+(-9)= | | 1.8(n-4)=9 | | 6x+4=9x-5 | | 2x+12=7x | | 3x+27=9x-3 | | -3(45-1)-3=-3(65+4)-4 | | 72x+160(425-x)=9 | | -3(t-2)+5t=9t-4 | | 72x+160(425-x-x)=9 | | x-29=-35 | | 9(x-3)+2=5x+4(-5+x) | | 9-(20)= | | x+(3x-800)=1200 | | k+11=3k | | -20y+-3y= | | 21y^2+8y-4= | | 3n+4(45-n)=155 | | .2(x+60)+1.6x=93 | | -7(0.3x-0.2)-5.1=-0.2 |