If it's not what You are looking for type in the equation solver your own equation and let us solve it.
t in (-oo:+oo)
1/2-2*t = 25/2 // - 25/2
1/2-2*t-(25/2) = 0
1/2-2*t-25/2 = 0
-2*t-12 = 0 // + 12
-2*t = 12 // : -2
t = 12/(-2)
t = -6
t = -6
| -2t+1=17 | | -2n=10/9 | | -2n=-3/2 | | -2n=-22 | | -2n-7=-11 | | -2n-5/9+5n=17/18 | | -2n-4/5=7/10 | | -2n-3/7=-3/7 | | -2n-3/7=-23/21 | | -2n-3/4=5/6n-181/60 | | -2n-3/10=-23/10 | | -2n-3=-39/11 | | -2n-2/9=-11/9 | | -2n-1/2+6n=39/2 | | -2n+8=20/3 | | -2n+7=-11+4n | | -2n+6+5n=42 | | 76=14x+20 | | -2n+4=16/3 | | -2n+3/5=-37/5 | | -2n+2/9=-4/3 | | -2n+2/9+5n=-44/45 | | -2n+10=95/12+1/2n | | -2n+10=28/3 | | -2n+10=102/11 | | -2n+1/2=-7/2 | | -2m=-20 | | -2m=-14 | | -2m-9/10=-209/10 | | -2m-9=-19/2 | | -2m-8=-24 | | -2m-7/9=-43/9 |