If it's not what You are looking for type in the equation solver your own equation and let us solve it.
a in (-oo:+oo)
a-3 = -4 // + 4
a-3+4 = 0
a+1 = 0 // - 1
a = -1
a = -1
| -3+7t=-1 | | -3+7t+4t=-23/4 | | -3+7n-2/3n=-31/4 | | -3+7d=-13/2 | | -3+6x=69 | | -3+6x=-9 | | -3+6t+5/6t=73/3 | | -3+6k-5k=-5/2 | | -3+6k+6/7k=27/7 | | -3+6/7x=4x+221/7 | | -3+6/7x=-87/7 | | -3+5x=-7/9 | | -3+5x+3/7x=81/49 | | -3+5t=7t-8/3 | | -3+5n=-13/11 | | -3+5k=57 | | -3+5d=-36/7 | | -3+5d=-38 | | -3+5b+1/2b=-17/2 | | -3+5/6m=-3/5m-167/70 | | -3+5/6b=-193/66 | | -3+5/6a=-3 | | -3+4n+6/7n=-93/14 | | -3+3w+1/7w=-118/21 | | -3+3m=30 | | -3+3k-1/2k=9/2 | | -3+3/7w=-39/14 | | -3+3/7t+5t=17/7 | | -3+3/5n+1/2n=-4/5 | | -3+2x=-2/3x-4 | | -3+2x=-6x+93 | | -3+2x-5x=-12 |