If it's not what You are looking for type in the equation solver your own equation and let us solve it.
f in (-oo:+oo)
f/2 = f // - f
f/2-f = 0
-1/2*f = 0 // : -1/2
f = 0
f = 0
| 7z-6=8z-4 | | 3(k-8)=5k | | x+y^2-6y+14=0 | | -13u^2-4=3u^2 | | 5x-8+2(8x+7)= | | 5=6(w-5)-19 | | 1/3v-3/2=-8/5 | | 21=5+2x | | 5(d-4)+6= | | 72=0.6t | | -2x(3y+9)= | | 0=16U^2+4 | | -4y(2y+7z)= | | (16m+7)-(4m+8)= | | (78-x)3=2.33 | | 5(d-4)=6 | | 6-2r+1=3r-5r+10 | | 6x-1=x+16 | | .25(8x-20)= | | v/3=v/4-3 | | 72=l(l-1)(l+9) | | x-5=2x+10 | | 8x+y-5x+7y= | | 21=15e^1/2t | | 4(-1+7k)-4(1+6k)=2k+3k | | -2w-44=-4(w+7) | | 2(4-1/3)=x+3(x-21) | | 6p=4+2(m-p) | | x+1=3(x-3) | | x+9=3x-4 | | 7x+35=100 | | -8x+6x-2= |