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)
6*t-(2*t)+7 = -1 // + 1
6*t-(2*t)+1+7 = 0
6*t-2*t+1+7 = 0
4*t+8 = 0 // - 8
4*t = -8 // : 4
t = -8/4
t = -2
t = -2
| 12=2d-4d+10 | | -7a+10-4a=-78 | | -4w-1+w=-28 | | 1=-4w+5w+4 | | x+7+3x=-21 | | -23=-3m+m-1 | | -2n-1+7n=-1 | | 6n+6+n=41 | | -5b-10+2b=-10 | | 5b-9+b=27 | | 3+2a-4a=13 | | 6+2x+7x=96 | | 15=-3n+5n-3 | | 9-4x+7x=27 | | 9+4x+4x=-47 | | 9+2t-7t=49 | | 4+6w+7w=134 | | 24=6n-n+4 | | 11=-a+2a+8 | | 10+b-6b=55 | | 3+4x+3x=-39 | | 3d-3-6d=-39 | | 8-5d+3d=0 | | 9+3x+3x=69 | | 2n+4+3n=29 | | 3-5x+4x=-8 | | 30=x+x+8 | | -54=4a+a-9 | | -7t+2+t=-46 | | 7t+5+5t=41 | | 3d-8-5d=8 | | -45=7a+3a+5 |