If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( t )
t = 0
t = 0
t = 0
t in (-oo:0) U (0:+oo)
2/(-5) = 6/t // - 6/t
2/(-5)-(6/t) = 0
2/(-5)-6*t^-1 = 0
-6*t^-1 = 2/5 // : -6
t^-1 = -1/15
-1 < 0
1/(t^1) = -1/15 // * t^1
1 = -1/15*t^1 // : -1/15
-15 = t^1
t = -15
t = -15
| 3+3x=-6+2x | | t^6-36= | | 1.5x-2.6=3.4 | | 62d-1+13=19 | | x+2x-12+x=-3+2x | | C+1/c-2=4/6 | | (5-x)(2x+3)(x+6)=0 | | 9+2.7t=-4.8t-8 | | 27-x=18.9 | | 9x+81=4x-24 | | 200=5x+55+5x+45 | | 3/4x=6/8 | | 3n+6=5n-12 | | 4x-x=b | | x+2x-12=x+7 | | 8j-5+j=14.2 | | -5(4y-8)+4(3y+8)= | | 9x+45=3x+27 | | 27=18.9+x | | 17x=-3/4 | | .25o+3.00=5.50 | | 5*2x=18 | | 6/21+5/28 | | .08m+17.00=31.80 | | 3m+4=q | | 11/12-3/8 | | 3(2x-1)-4(x+7)= | | 8x^4-x=0 | | 3/15+2/5 | | 12x+4x-5-7=20 | | 3/7+1/5 | | 5x-(2x-3)=17-4x |