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)
(4/5)*t-9 = 3 // - 3
(4/5)*t-9-3 = 0
4/5*t-12 = 0 // + 12
4/5*t = 12 // : 4/5
t = 12/4/5
t = 15
t = 15
| 31x+12=-50 | | 75x+5= | | 26-4x=-10 | | 1x+4x-10x+6x=800 | | 75+x=5 | | 3x+2=2x+r | | 20+8(x-2)=100 | | -8(4k-4)=-5-32 | | 12.50=5x | | 116-11x=314 | | 10x+5x=600 | | 75x+70= | | f=w/d | | 28=-7/8x | | 60x+120= | | 8y-4x-4xy=-4 | | 7(x-9.5)=4.9 | | 3/5t-1/10t=t-11/12 | | 27x-18-11x=4(4x-5)+2 | | 3x+-20=2x | | 26x-9-15x+4=25x-5-14x+13 | | 12=0.5t+4 | | 0.4+0.2x=0.6 | | 4Y+28=2Y+38 | | 3x-2(3x+1)=16 | | 2x+10=-3x+20 | | 3(2n+2)=81 | | x-5*x-5= | | 26x-9-15x+4=25x-5-15x+13 | | -8(x-3)+4(x-2)-2(3x+1)=0 | | 2(3-3n)=2-n-3 | | 5(-2x+3)-3x=106 |