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*k+5*k-3/7 = -52/7 // + -52/7
2*k+5*k-3/7-(-52/7) = 0
2*k+5*k-3/7+52/7 = 0
7*k+7 = 0 // - 7
7*k = -7 // : 7
k = -7/7
k = -1
k = -1
| 1/5+1/3a-7a=-1097/15 | | 1/3+4t+6t=23/9 | | 1/2+m-3m=-43/2 | | -6.8x=5.304 | | -5x+2+2/3x=-7/3 | | -59/12=6a+1/5a+1/4 | | -4/5w-5+3w=-64/15 | | -5/6b-5+1/3b=-27/5 | | 5/6t+3/5-3/4t=223/330 | | 36/35=-1/2m+2/5m+3/7 | | -9x+25+11x+25=4 | | -6/7x-6+x=-32/7 | | 1/7-1/2x-2x=-313/14 | | n-1/6+5n=16/3 | | 5-2x/2x-5 | | t+8+4/5t=65/7 | | 90=7n+3/7n+6/7 | | 1/5+k+4/7k=-103/35 | | 169/45=3n+2/5n+3 | | 1/2(b-4)=2 | | 2x-1/5-7x=-53/15 | | -171/140=-4/7m+m-9/10 | | 53=4k+2k-1 | | 1/9+3/5b+4/7b=404/315 | | -2/3-5x+2/3x=-25/18 | | 60/7=-3/7n+3n+6 | | -499/9=-2d-6d+5/9 | | -8/5= | | r^2=624 | | (3x-36)+32+(x+12)=180 | | 38/77=-2/7w-4w+4 | | -21/2=-6b-7b-4 |