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)
10-x = 4*x+9 // - 4*x+9
10-x-(4*x)-9 = 0
10-x-4*x-9 = 0
1-5*x = 0 // - 1
-5*x = -1 // : -5
x = -1/(-5)
x = 1/5
x = 1/5
| 1/6x+9=291/22-5x | | 2/7-1/5x=-4x+145/42 | | x+8=-3/5x+56/5 | | -4/5x-1/3=5x-11/4 | | 2-4/5x=-1/7x-32/7 | | -3/5x+3=16/5-2/5x | | -1/2x-6=-x-89/16 | | 4x-2/7=4/5x-2/7 | | 9-2/3x=-1/2x+49/6 | | 4x-3=-1/7-x | | 6x+6=-6x+18 | | 5/7-1/2x=x-221/14 | | 1/2x+1=27/28+3/7x | | 6-x=4x+34/9 | | 1/3x+2/9=-10/9+3x | | x+8=49/6+2/3x | | 4x+9=21+3x | | -8/9-2x=5x+212/45 | | -1/7+2x=-5/6x+355/14 | | -2/5x+1=5/7x+331/175 | | 1/2x-10=2x-17/2 | | x-2=-24/7-x | | -1/4x+3/5=-5/7x-501/140 | | -1/7x-1/2=6x-265/14 | | 6/7x+7=3x+141/28 | | -2/3x-3/8=-3/8-2/3x | | 5/7x-2=4/5x-103/35 | | -1+3/5x=1/5x-29/35 | | 5x+2/7=-2/7x-348/77 | | 4+5x=x+20 | | 2/3x-1/2=-5/3+3x | | 1-1/3x=-7x-37/3 |