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)
(1/5)*x+2/5 = -2/5 // + -2/5
(1/5)*x+2/5-(-2/5) = 0
(1/5)*x+2/5+2/5 = 0
1/5*x+4/5 = 0 // - 4/5
1/5*x = -4/5 // : 1/5
x = -4/5/1/5
x = -4
x = -4
| x^3+3x^2-16x-48=x | | (6x^8y^6z^9)(9x^4z^2)= | | 2x+-8=x+17 | | 5-2(x-7)-(3-x)=4 | | 6x-4(8/7)=-24 | | mn-7+4m-28=0 | | 5n-1/3=-6 | | -b+s=16 | | 2x^3a-8=0 | | 1/8x-1/2x+3/4x=5/8-3/2x | | (x-10)-9+7x(x-10)= | | 30k+70=20k+110 | | 2y-6/x | | 6x+4x=140 | | 4x+4+4x+3+4x=4x+4x+5x+4 | | 8(x/2-5)=2x-6/2 | | 4t-3=5t+1 | | -8c-9c=-33 | | 4t-3=5+1 | | 1x1/7x=7 | | -6m+5+16m=-5m+6+12m | | P=2.5m | | 4(x-9)=x-20 | | 150m-75m+42975=45675-150m | | -5+2x-4x+3-x=16 | | t^1/2-16t^1/4+64=0 | | x(x+7)+9(x+7)= | | -17=3+8(a+2) | | 0.75x-0.25x+14=3 | | -(x+13)=8 | | -b+a=16 | | (-64/125)^(1/3) |