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)
7*k-3 = 2*k-43 // - 2*k-43
7*k-(2*k)-3+43 = 0
7*k-2*k-3+43 = 0
5*k+40 = 0 // - 40
5*k = -40 // : 5
k = -40/5
k = -8
k = -8
| x+4=6x+64 | | 7x+9=-69-6x | | n-10=4n+20 | | 4n+3=-2n+75 | | 5d-8=-8+2d | | 2k+6=62-5k | | -6+x=7x+54 | | 7+2m=6m+3 | | -7k-3=4k+19 | | -5d+6=4d-30 | | -7w+5=-5w+11 | | -3w+7=2w-8 | | 4m-3=61-4m | | -8+3b=5b-18 | | 4a+7=5a+11 | | 5a-4=3a-10 | | 78*17/26*2/9 | | -7-5n=5n-57 | | -x+4=-38+6x | | -3k-4=2k-44 | | 7+3b=5b+3 | | -7x-3=-123+3x | | 4-3t=2t-26 | | 6t-10=45+t | | -10+2b=4b-32 | | 4t+4=2t+26 | | -6x+1=x-76 | | -4n-2=68+6n | | 7k+3=120-6k | | 7w-5=-5-w | | -5d+6=-6d+10 | | 2/7x=12 |