If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
81/3 = 5*x // - 5*x
81/3-(5*x) = 0
81/3-5*x = 0
27-5*x = 0 // - 27
-5*x = -27 // : -5
x = -27/(-5)
x = 27/5
x = 27/5
| -b+7=6b-42 | | 5-2b=5b+19 | | 5k+6=-5k+86 | | -3k+8=44+k | | 6n+10=25+3n | | -1-x=-3x-3 | | 11x+9=2x+9 | | 2+7k=2k-38 | | 6d+7=3d-29 | | 6t+7=25+4t | | -3/4=9y | | 2m-6=m+3 | | -7m-6=-20+7m | | -3k+6=2k+31 | | (x+2)(2x+3)=60 | | 6k-4=-4k-34 | | 7+4k=2k+9 | | 4k-5=-7k+83 | | 1+4n=n+28 | | -k-9=4k-4 | | 7n+9=3n+49 | | 4t+8=t+26 | | 2x-3-9x=14+x-1 | | x-45=-45 | | 8+7n=-6n-83 | | -4x+1=7x-65 | | x+5=77+7x | | b+10=7+4b | | 1+6b=2b+13 | | -10+4x=5x-12 | | 3+5d=6d-7 | | x-2.5=4 |