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)
6*x+6*x-1 = 71 // - 71
6*x+6*x-71-1 = 0
12*x-72 = 0 // + 72
12*x = 72 // : 12
x = 72/12
x = 6
x = 6
| 27/10=-4/5x+1/6x-3 | | -2/5x+5/9+x=61/450 | | 1/2x+5+2/3x=22/3 | | x+1/2+4/7x=9/7 | | 6x+1+3/7x=89/14 | | 2x-3+1/2x=-4/3 | | 5/6x+5/8-5x=-165/56 | | 3-4x+6x=17/6 | | -25/3=7x+1/3x-1 | | 5=6x-7x+8 | | 2x+4+1/6x=-9 | | 2/7x+7+3x=86/9 | | 2x-2/3+5x=-94/15 | | 5/7x+2/3+1/5x=206/525 | | 7x+5+2/7x=494/7 | | 1/7-7x+x=-125/7 | | -80/11=6x-4x-8 | | 7x-7+6x=-142/11 | | -1532/35=-4/7x-5x+4/5 | | 8=-4x+7x-4 | | 9+7x-1/3x=167/3 | | -7x-1+5x=13 | | 4+5/7x+6x=-536/7 | | 272/21=-5x-4/7x+8 | | 38/35=7x-6x+4/5 | | 5=5x-4x+4 | | 3/10+x+3x=-197/10 | | 7+7x+4/5x=-4/5 | | 3/10-2x+5/7x=-93/140 | | -1=5x+x-1 | | 4+5x-2/3x=25/3 | | -x+8+x=8 |