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+6*k+10 = 88 // - 88
7*k+6*k-88+10 = 0
13*k-78 = 0 // + 78
13*k = 78 // : 13
k = 78/13
k = 6
k = 6
| 7m+10+m=-78 | | 3m+4-7m=-40 | | 3n+2-5n=2 | | 8+7w+6w=-148 | | 3a+3+7a=23 | | -w-6-4w=-46 | | 3d-4+4d=10 | | 8+7b+b=80 | | 5x^2-9x-25=-7 | | -2+2a+3a=-12 | | 5k+10+4k=10 | | 3n-7+2n=53 | | -4k-8-k=-63 | | 6d-2+4d=-2 | | 7b+8+5b=104 | | -k+9-4k=9 | | -6b-3+7b=-2 | | 11=a+2a+8 | | -3t+8-3t=2 | | -5a-9+4a=0 | | -18=5t-7t-10 | | 7+t+7t=47 | | 7m-8+2m=-53 | | 13=x+2x+1 | | 7=3x+5x-1 | | 27=-6a+2a+3 | | 4d+5+3d=19 | | -3+t-6t=-3 | | 2-4k+7k=8 | | 11=a+6a+4 | | 5r^2-33r+47=7 | | -4d-9+3d=-13 |