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)
x+3 = 19/5 // - 19/5
x-(19/5)+3 = 0
x-19/5+3 = 0
x-4/5 = 0 // + 4/5
x = 4/5
x = 4/5
| 2/7+x=20/21 | | 5/9+x=52/45 | | 7x=-7/3 | | -14/3=x-5 | | 9+x=15 | | 43/42=x+6/7 | | -1/4=x+1/2 | | 2+x=26/11 | | 2x=14/11 | | x+4=54/11 | | -3/7x=3/7 | | 1/10+x=-2/5 | | 7+x=85/12 | | 5/7+x=39/35 | | 1+x=-5 | | 3x=4/3 | | 4.3q-3.5-5.8q=-2.5q-3.3 | | 4/5=x+2/5 | | x-1=-16/11 | | 2x=6/5 | | 1/3=x-1/3 | | 1/3x=8/3 | | x+1/4=41/4 | | x+3/4=65/44 | | 91/8=x+3/8 | | x+5/6=5/6 | | x-7/8=-39/8 | | x+2/9=29/9 | | 6/7x=12/7 | | x-5/8=-23/24 | | -1+x=-1 | | 3x=9/11 |