If it's not what You are looking for type in the equation solver your own equation and let us solve it.
k in (-oo:+oo)
(-4/5)*k = -8 // + 8
(-4/5)*k+8 = 0
8-4/5*k = 0 // - 8
-4/5*k = -8 // : -4/5
k = -8/(-4/5)
k = 10
k = 10
| 1/4x+1/2=7/8 | | 18h+3h-13h-5h=18 | | -1/7y=17 | | 56p^4q^2/160p^3q^5 | | 3j+4j+2j=18 | | s^3-1=0 | | 2c-10=8-4c | | 6b+3b-4b=20 | | 12r-6r=18 | | 3k-2k=20 | | x/47=y+11 | | 15h-13h=14 | | 3u+u=20 | | 2x^2+9=163 | | x/47 | | x=y*47+11 | | 3(2x+5)=6x-15 | | (X^2+6x)/(2)*(25)/(5x+30) | | 4s+2s=6 | | y=2*4+3 | | 9(x-2)=8(x-3) | | 3x9/5 | | 36x+4y=-32 | | 0=147-4.9t^2 | | 12z^2-25z+12=0 | | -5-y=-3 | | 8r^2-3r-12=6 | | -3s+3=3 | | x+2x+x+26=186 | | 1/4m=10 | | x/3+1=2x/7 | | 2b^2+5b-22=11 |