If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
2.2/x = 500/250 // - 500/250
2.2/x-(500/250) = 0
2.2/x-2 = 0
2.2*x^-1 = 2 // : 2.2
x^-1 = 0.90909091
-1 < 0
1/(x^1) = 0.90909091 // * x^1
1 = 0.90909091*x^1 // : 0.90909091
1.1 = x^1
x = 1.1
x = 1.1
| 5-x+3=5x-10-6 | | (3x+2)+5x=180 | | 7x+7=7(x+5)-5 | | -8x+3x+18-12x= | | 1/4(x-1)=1/3(x-6) | | 8(a+9)=8(a-6) | | 2L+2(L-7)=90 | | 9x+12y=0 | | 756=2x^2+6x | | 3.8k=23.94 | | 30.6y=214.2 | | x/5=3/15 | | 4w-(26)=82 | | y/7=6 | | x+(x+1)+(x+2)=168 | | 9+g=-9 | | 7k-4k-3= | | 5-w=11 | | 110+(5x+5)=180 | | 12t+48=20t | | 2=-2x/3 | | 3+7y-1=7y+16-2y | | ax-2=cx-4 | | 4(h-5g)=equation | | 10x+30=100 | | 1600*1/2 | | e/5-(14)=8 | | 5y+18=12-6(y+7) | | 28/12+62/12 | | 4(3x+1)-7=6+5x-2 | | y-10=-13 | | 9x-8=-8+9x |