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*x-20)/30 = 0
5*x-20 = 0 // + 20
5*x = 20 // : 5
x = 20/5
x = 4
x = 4
| 62x+2+14=100 | | 5(n+3)=55 | | 13b=27 | | 2/3x-5/12=-1 | | (-11+i)(-11-i)= | | 3=-6x-21 | | 12x+4+26-6+2=100 | | 12+4+26-6+2=100 | | 8-5x=1x-16 | | Y=sin*2*x | | 10(s-4)=-68 | | 5t-3=9-t | | 7.2=x-4.9 | | 4(n-5)=16 | | 3(t+1)=-6 | | x^3(2x-1)=0.01 | | (n-15)*7=42 | | 3(3w+1)*5=-10 | | 32x+2-12+4=100 | | 3(4s+7)=165 | | 0.1t=0.9+0.7t | | 5=-10+1.5x | | 4(2l+6)=56 | | -5(2t+5)=15 | | 2x^4+x^3+1=1.01 | | 3(f-4)=-33 | | 4(2l+6)=36 | | 32+2-12+18-3=100 | | -8(s+2)=-12 | | 3(a-8)=33 | | 2x^4+x^3+1=0.01 | | -x^2+12x=15 |