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)
T/(-3) = 13 // - 13
T/(-3)-13 = 0
-1/3*T-13 = 0 // + 13
-1/3*T = 13 // : -1/3
T = 13/(-1/3)
T = -39
T = -39
| 200+0.15x=317 | | (x+6)(x-5)=x | | 3z/8-3=7 | | 7x-83=2n-13 | | 6-5b=9 | | cos=0.8 | | 200+0.25x=340 | | X/-29=2 | | Q/6=7 | | z^5/x^6 | | z^5/x^5 | | y=22+2x+8 | | 3p+2q-q+5q= | | -13/2x=26 | | 7n^2-23n+6=0 | | 6(3x+10)=(3x+5) | | 3x-4-(2x+6)= | | 9/2x=34 | | 4-2k+1=-3 | | f(4)=x^2-3x+7 | | 3y+38=4x+8 | | x+(x-10)=50 | | -4(5y-5)+2(4y+6)= | | c=50+0.75(0) | | Y-20=-40 | | 5(b-3)=35 | | n(9-4)=3(n+12) | | 5k+3=-2k+9 | | 9x-11=5x-15 | | x*98+y*138=80360 | | 5(m+2)+3(m+2)=40 | | 3(5p-4)=12 |