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)
13/2 = x-(1/2) // - x-(1/2)
13/2-x+1/2 = 0
7-x = 0 // - 7
-x = -7 // * -1
x = 7
x = 7
| 29/70=x-3/10 | | -3/4x=3 | | 0=x-1/2 | | x+8=35/4 | | 2/3=x+2/3 | | 1/5x=12/5 | | x+1/3=-1/6 | | 1+x=11/8 | | x+3/5=23/5 | | 2/3x+6=30 | | x/6=-6/7 | | x+8/9=61/99 | | -1/3+x=-28/3 | | -3/5+x=3/10 | | 7y-3/4=-7/3y-7/4 | | x/7=-1/7 | | x+3/8=19/8 | | x-9=-53/6 | | -r^2+4=3r | | 2/7=x-5/7 | | 2/3x=2/3 | | 1/2+x=7/12 | | 1+x=5/6 | | x-10=-19/2 | | x/4=5/6 | | 11/72=x+3/8 | | -5/7x=-40/7 | | -6+x=-6 | | -2/7+x=33/7 | | x+5/9=-5/18 | | x+4=41/11 | | -1/3x=1 |