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)
54 = 5*x+7*x-6 // - 5*x+7*x-6
6-(5*x)-(7*x)+54 = 0
6-5*x-7*x+54 = 0
60-12*x = 0 // - 60
-12*x = -60 // : -12
x = -60/(-12)
x = 5
x = 5
| 6d+6+7d=-137 | | 64=-4t-7t+9 | | -7t+7-3t=-53 | | 3+m+5m=-69 | | 2+2t+2t=-18 | | 1+4k-2k=1 | | 33=2a+6a+9 | | 3+2k+2k=51 | | -9-4b+b=18 | | 1+x-5x=5 | | -131=-5m-7m+1 | | 3+5x+4x=39 | | -5+2d+2d=-45 | | 3k-4-7k=-36 | | 134=7k+5k+2 | | 6t+5+3t=77 | | 6d+6+4d=56 | | -72=-7t+t-6 | | 6-3b+2b=5 | | 7t-3+4t=19 | | -m-9+2m=-2 | | -12=2x+4x+6 | | -7w+9-4w=-35 | | 5b+2-3b=-22 | | 3+k+5k=51 | | 1=3m-4m+2 | | 9+7a-3a=1 | | -2x+3+5x=3 | | -9+5x+5x=101 | | -7n/18-11n/30 | | 5m+9+2m=2 | | m+2+4m=12 |