If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
12*x+7 = 0
12*x+7 = 0
12*x+7 = 0
12*x+7 = 0 // - 7
12*x = -7 // : 12
x = -7/12
x in (-oo:-7/12) U (-7/12:+oo)
(4*x-6)/(12*x+7) = 0
4*x-6 = 0 // + 6
4*x = 6 // : 4
x = 6/4
x = 3/2
x = 3/2
| p/5+1=0 | | x+2=90 | | x*9+2=90 | | 31.61=6g+3.59 | | 4.89-1.2-5.69=-1.89-2.4 | | 5B-8=37 | | 1.4-1.6(t+6)=46 | | a^2-5=44 | | -10y=4-4x | | 9*x+2=90 | | 9x^2+7x=-2 | | 2n^2=-16 | | 7x-116=112-5x | | v^2+4=40 | | 5x+4-2x=x-8 | | X^2+22X+1=0 | | x/-3+8=16 | | y^2=-18x | | .875n-3=.833n+12 | | -1-x=12 | | 25m^2-n^4=0 | | (9+u)(3u-2)=0 | | -x/5=-7 | | g-6/6=7/6 | | r/2+r=3 | | 5(1-x)+3(1+x)=8 | | x(x+6)=2*14 | | -3x^2+4x=-1 | | 12/x=132 | | (-1)-(-40)= | | x(x+10)=(x+2)(x+7) | | 12+7sinx=5+9cosx |