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)
5-13 = x/7 // - x/7
5-(x/7)-13 = 0
-1/7*x-8 = 0 // + 8
-1/7*x = 8 // : -1/7
x = 8/(-1/7)
x = -56
x = -56
| 9x-4=20+5x | | 4-2x+10-4x= | | 3(y-5)=4-15 | | 11w=8800 | | 9x(6x+2)=0 | | 45-13=4(x-2) | | x+22+4x=-45-4x-50 | | (X-8)(x+6)=-8(x+4) | | x+(x-5)+(x+3)=25 | | X+9=2x-2 | | 2x+3-5x= | | 180=0.5*12h | | 6n-4=-2+7n | | x+9=2x+-2 | | 15+g=30 | | (a^2/3b^-1/2)^-6 | | T+16=31 | | 5p+2=8p-19 | | n-5=-5+3n | | 3x+7=-9+5x | | 5a+2a-5-7= | | 4(5z-1)-2(z+8)=15(z+1) | | 4k+7+8=15+4k | | X+5=-43+5x | | 31y-22=9 | | 7x-7=700 | | F(x+9)=x^2+4x-7 | | (c*0.8)+(c*0.2)=25 | | 6x=35y+9 | | (c*0.8)+(x*0.2)=25 | | 3x^2+3y^2-12x+4=6 | | 3x^2+3y^2-12x+4=3 |