If it's not what You are looking for type in the equation solver your own equation and let us solve it.
a in (-oo:+oo)
6*a+a-9 = 26 // - 26
6*a+a-26-9 = 0
7*a-35 = 0 // + 35
7*a = 35 // : 7
a = 35/7
a = 5
a = 5
| -3x-5+x=15 | | 2+3t+2t=2 | | 2n-2+5n=-44 | | -23=-b+4b-5 | | d+6-6d=-39 | | 81=7d+d-7 | | -8x+5=-67 | | -15=-7w+5w-3 | | 64=2k+3k+9 | | 36=-2m+6m+8 | | 4t+10+5t=64 | | -4=-3m+6m-7 | | 23=t+6t+9 | | -8+4m+m=27 | | 10+6w+6w=142 | | t-3+t=7 | | -10=-6n+4n-6 | | -17=-5k+k-5 | | 9-6b+b=14 | | 10-3b+2b=-1 | | 10+7w+6w=114 | | 79=-4d-4d+7 | | -1=m-2m+1 | | 10-5x-x=40 | | 15=-3a+5a+9 | | 10-6w+5w=2 | | -6-n+2n=-14 | | 6=5t-2t-9 | | z=a+blnx | | -3=-4w+2w+9 | | 9-7k+k=-33 | | -22=2n+4n+2 |