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)
(2/3)*k-k-(1/2) = (1/6)*(k-51) // - (1/6)*(k-51)
(2/3)*k-((1/6)*(k-51))-k-(1/2) = 0
(-1/6)*(k-51)+(2/3)*k-k-1/2 = 0
(2*k)/3-1/6*(k-51)-k-1/2 = 0
(-1/6*2*3*(k-51))/(2*3)+(2*2*k)/(2*3)+(2*3*(-k))/(2*3)+(-1*3)/(2*3) = 0
2*2*k-1/6*2*3*(k-51)+2*3*(-k)-1*3 = 0
3*k-6*k-3+51 = 0
51-3*k-3 = 0
48-3*k = 0
(48-3*k)/(2*3) = 0
(48-3*k)/(2*3) = 0 // * 2*3
48-3*k = 0
48-3*k = 0 // - 48
-3*k = -48 // : -3
k = -48/(-3)
k = 16
k = 16
| 3x+rt=5x-st | | X-8/3+8/3=-x/7 | | 2/3-(k+1/2)=1/6(k-51) | | -3/8m=-9 | | 20a^5+4a^4+8=0 | | 0.36x+2.2=-5 | | 4a^4+8+20a^5=0 | | -23+15=(-23-15) | | 3x+5(x+-9)=3(x-10) | | .40+15x=2600 | | (-45)(3)= | | .40x+15=2600 | | X+7/4=55 | | .40x+25=2600 | | -44+37+(-59)+45= | | 12x+17x-8+1=-3+1-8 | | X/5+2=x | | 4x/5=-16 | | 3c-8=13 | | 75/(3.14)54^2 | | 9x-6-4x=20+8x+4 | | 16+2y-7=30+3y-13 | | 4a+1-7a=11-a-4 | | 4a+1-7a=11a-4 | | 3m+40=5-2m | | 20-8y=18+5y+15 | | 5x+9-x=4x-3 | | 6k+11=7-2k-36 | | 7y+4-3y=2y+22 | | 6m+27=3+9m | | 20-19x=4-3x | | 5a-10=3-3a-61 |