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)
40/400 = x // - x
40/400-x = 0
1/10-x = 0 // - 1/10
-x = -1/10 // * -1
x = 1/10
x = 1/10
| 8x^3/2y^3/11 | | 6.9x-2.5=25.1 | | f(-9)=1.5(-9)-4.2 | | 4(5z-1)-2(z+3)=7(z+1) | | a+a=-4 | | 5+9(x-6)=10-9(x-6) | | 12*s=p | | -6=5x+1+3 | | F(x)=1+27+100 | | 6t-10=13t+8 | | 6+7(x-9)=9-4(x-9) | | -5A+a=8 | | 3=3-3X-2X | | 2(3t-5)=13t+8 | | x-5+6=-7 | | b^5+26b-5=0 | | 5+2p+2p=-7 | | 11+3x=-28 | | 6b+b=-7 | | 2x-5x=33 | | 12x=3x-63 | | 6x-15=3(2x-3) | | -5(4x+1)+5x=25 | | 11x-(3x-2)=10 | | 3a^2+7a=-2 | | 40-8x=136 | | X^3-9x^2+27x-30=0 | | X^2+-10=0 | | 8(6x-3)=33 | | 15x-5=8x-22 | | 24-8x=112 | | F(x)=2x+54x+100 |