If it's not what You are looking for type in the equation solver your own equation and let us solve it.
c in (-oo:+oo)
(1/9)*c = 81 // - 81
(1/9)*c-81 = 0
1/9*c-81 = 0 // + 81
1/9*c = 81 // : 1/9
c = 81/1/9
c = 729
c = 729
| 14x-8=13x+3 | | 7/8-2/3= | | 4x+3-(2x)-2=5x-34-4x | | 25v-1=2 | | 20s^2+19s+3=0 | | x^2+30x=400 | | 7c+13=3 | | 2(11+a)=0 | | 136x-1+134x+1=180 | | Cos^2x+3sinx-3=0 | | -b/3-5=2 | | -55=5m | | 1v-1=2 | | 4-2(3x-5)=2x+8 | | x+5+100=180 | | 7(6x+5)=35+2x | | 1+5(2+x)=2(6x+1)-4x | | 19c-18c+4=13 | | (-16x^2)+80x+800=0 | | 15/x=25 | | 8x-54.6=x | | 2x+6+3x+4=180 | | 12/5y-36/5 | | 2(5x+17)=3(7+x) | | -3+a=44 | | 2(p+7)=16 | | 4w+10=-8w-14 | | x-30=3x+14 | | -9/4x-72 | | 8x+3y=-40 | | 15c+3c-16c-c=11 | | -9/4x=-72 |