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)
7*x-3*x-8 = -64/9 // + -64/9
7*x-3*x-(-64/9)-8 = 0
7*x-3*x+64/9-8 = 0
4*x-8/9 = 0 // + 8/9
4*x = 8/9 // : 4
x = 8/9/4
x = 2/9
x = 2/9
| -3x-5=-80/3-5/6x | | -3x-4=-37/7 | | -3x-4+4x=-37/12 | | -3x-3/4=15/8 | | -3x-3=x-1 | | -3x-3=33/10+4x | | -3x-3=-7/3-6x | | -3x-3=-3/2 | | -3x-3=-1/2x-23 | | -3x-2=-5/4-x | | -3x-10=-49/4 | | -3x-10=-26-x | | -3x-1/4=11/4 | | -3x-1/2=-3/7x-179/70 | | -3x-1/10=13/5 | | -3x-1=-1/3 | | -3x+9-5/7x=137/21 | | -3x+9+4x=15 | | -3x+8/9=-11/18+2x | | -3x+8/9-3x=-65/18 | | -3x+8-x=-20 | | -3x+7/10=-3/5x-9/10 | | -3x+7=9-5x | | -3x+7-3x=10 | | -3x+7+2/5x=-82/5 | | -3x+7+1/7x=83/9 | | -3x+6+x=24 | | -3x+5/7=-226/7 | | 3x-2+7=5/6 | | -3x+5/6+x=-29/66 | | -3x+5+2x=1 | | -3x+4/5=4/5 |