If it's not what You are looking for type in the equation solver your own equation and let us solve it.
s in (-oo:+oo)
(1/2)*s+s = 12 // - 12
(1/2)*s+s-12 = 0
3/2*s-12 = 0 // + 12
3/2*s = 12 // : 3/2
s = 12/3/2
s = 8
s = 8
| -3*12=n | | 5(3m-4)(2m+5)=0 | | c/4+12=21 | | 5m^2n^4/25m^2n | | -4(-12)=n | | 8z-1=9z | | 8x-1=9z | | 2x+4(3x+23)=22 | | 5(-7)=n | | x/5-102 | | 5n+3n=32 | | a/5=-7+2 | | -47+6y+3=3(3y-5)-8 | | 1=s-30 | | 7/x+2/x-1=8 | | 4(a^2-3)=6a+4(a+3) | | x^2(12ln(x)+7)=0 | | a=p/0 | | -58+7y+6=3(4y-5)-2 | | -2t^2-11t-12=0 | | 100=4+10(0.4/X) | | 10=-5/9u | | 2h^2-2h-24=0 | | 8(y-3)+3(y+1)=45 | | a=p/c | | j+16-48+4=x | | 32-2(x+1)=12x | | log(8)(x+3)+log(8)3x=log(8) | | 21=8p^2-2p | | 3x-7=2(ax-5) | | 4x^2-13x+14=2x+5 | | 3+4s=10+2s |