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)
(2/5)*k-k-(1/2) = (1/10)*(k+1) // - (1/10)*(k+1)
(2/5)*k-((1/10)*(k+1))-k-(1/2) = 0
(-1/10)*(k+1)+(2/5)*k-k-1/2 = 0
(2*k)/5-1/10*(k+1)-k-1/2 = 0
(-1/10*2*5*(k+1))/(2*5)+(2*2*k)/(2*5)+(2*5*(-k))/(2*5)+(-1*5)/(2*5) = 0
2*2*k-1/10*2*5*(k+1)+2*5*(-k)-1*5 = 0
3*k-10*k-5-1 = 0
-7*k-5-1 = 0
-7*k-6 = 0
(-7*k-6)/(2*5) = 0
(-7*k-6)/(2*5) = 0 // * 2*5
-7*k-6 = 0
-7*k-6 = 0 // + 6
-7*k = 6 // : -7
k = 6/(-7)
k = -6/7
k = -6/7
| 13x^2+44x+17=0 | | 27+(x+9)=89 | | 16w^3-9w=0 | | 2(-y-3)-y=23 | | 2(6s+4)-4s=2(4s+2)-9 | | 2x/3-5x/12 | | 1/5k-(k+1/5)=1/25(k+5) | | 9+2s-6=6s+3-2s | | 35x^2y+21xy-14y=0 | | 16-3x=0 | | 4x=12+48x | | (3*4)= | | 3+6/x=8 | | 6/x=5 | | 1.6x^2=3x | | 11x^3+11=0 | | 3x-10x=-21-4 | | .5(3n-3)=.4(3n+1) | | 16x^2+52x+4=0 | | 6b^2-36b+54=0 | | .5(3x-1)=.4(3x+1) | | 8b^2-112b+392=0 | | 16x^2+52x-26=0 | | x+7/5=2x+3 | | x+7/5=2x | | 5x+3x=0.1 | | 2x-5/3=3x+1/2 | | 2b(5-b)=9 | | 3/5x+12=24 | | 9=m/-36 | | 17=d/17 | | 0.2*700= |