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 // - k/8
4/5-(k/8) = 0
4/5-1/8*k = 0 // - 4/5
-1/8*k = -4/5 // : -1/8
k = -4/5/(-1/8)
k = 32/5
k = 32/5
| 30a^2b-90ab/3ab | | -13=2w-3 | | 3(15/y) | | 4(2x-7)=24 | | k=6.2 | | 4x+7=5x-6 | | 2+4y=15 | | 17/18-20/27 | | 7x-4x=x+2x | | X-7=.97X | | 4^7/4^4 | | 2psquared-21p=11 | | w(t)=8x^2+16x-19 | | 8+4y=-4 | | ((X-7)/x)=.97 | | log(8)2=1/3 | | 5(a-10)=60 | | 5-8x-3x+7= | | 2(3-1)+3=21 | | 5(5/8)x4(1/16)= | | 5d+6s=28 | | 4x+34=7x-11 | | -(2b-(5b+2))=2+(2b+7) | | 2log(x)+log(4)=log(70)-log(5) | | (2x+6)+(8x+4)=180 | | x(x+3.14)(x-0.5)=0 | | 32-8x-14x=-17x+71 | | 4k+3(k-6)=2l | | 37t-16t^2=20 | | 5(a+10)=60 | | (14-y)y=45 | | (21/x)-(21/(x-4))=-4 |