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/4+13 = 0
1/4*x+13 = 0 // - 13
1/4*x = -13 // : 1/4
x = -13/1/4
x = -52
x = -52
| h=2Lw+2wh+5hL | | 1=5n-(n+7) | | 50=.15x+5 | | S=2Lw+2wh+5hL | | -5+x/22 | | 41-3/8x=-22 | | 6x+7/7-6x | | 36=.96x | | 17-5/9x=22 | | 9x-2(3x-4)=14 | | 5x/2-14/5-1/10+7x/4 | | 6x+7=0 | | -8x*3=-17 | | 5b+12=2 | | 1/x-3 | | -6=b/13 | | U^2-2U-16=0 | | A/a-8=-27/a-12 | | z^2-2z+z=0 | | 3x-3(2)=12 | | 7x-2x+9=x-7+16 | | 14/5+1/8t=5 | | 12y+12=15y-12y | | A/a-8 | | X+8/3=4x | | 3(-1)-3y=12 | | x+8/6=x-7 | | x+8/(6)=x-7 | | 14-2x/3=18 | | 35-(x+9)=9x-4 | | 3x/5+22=28 | | 3s=2q/7 |