If it's not what You are looking for type in the equation solver your own equation and let us solve it.
v in (-oo:+oo)
(-4/5)*v = 12 // - 12
(-4/5)*v-12 = 0
-4/5*v-12 = 0 // + 12
-4/5*v = 12 // : -4/5
v = 12/(-4/5)
v = -15
v = -15
| 112x-16=-36 | | 5x+12.50= | | 4x+1+5x=-17 | | 5.00x+12.50= | | -16t^2+62t+9=17 | | -8-3n=-2(n+7) | | 50x-4=350 | | 5x-(14-x)=30-10x | | 500=35n+55 | | 4.9t^2+23t+5=0 | | -24-8m=3(2-6m) | | -2.003+a=1.245 | | 5x-(14-x)=32-10x | | 6x-3/2/3=2/3x+7 | | 0.02=6 | | 4x+2(x-2)=-9+5y+13 | | 3x/x-4=2-12/x-4 | | A-13=-3 | | 1+3k=-39+k | | 2x+3=4x+21 | | 13/(2/3) | | x^2+43x-60=0 | | d-2.7=2.0+2d | | 15x+[31x-2]+90=180 | | -9p+2=164 | | 20x^2-18x+3=0 | | n/150=6/100 | | y-3(a+p)=5(y-8a+p) | | n/150=6100 | | 56=7/8× | | (6x-20)=(4x+10) | | 0=-3(1-11a)-10(2+a) |