If it's not what You are looking for type in the equation solver your own equation and let us solve it.
a in (-oo:+oo)
a/2-5 = 0
1/2*a-5 = 0 // + 5
1/2*a = 5 // : 1/2
a = 5/1/2
a = 10
a = 10
| 2x^2-6x+9=21 | | .42w-11=-57w | | 6n+8=5n+5 | | 2x^2+17x+9+0=0 | | 5y+3+2y=24 | | (6x^2+20x-544)=0 | | 4x/3-x/6=7/2 | | 16q^2-23q+7= | | 15+3x=10+4x | | x^2+4x+3.5=0 | | 3x=6y-4 | | 1.4a-3=1 | | sqrt(x-43)-sqrt(t+28)=158 | | 3x/4-8=x/3 | | 2x-7y=15fory | | x^2-36x-252=0 | | 5-1/5x=1/10x | | 11=-15x+7 | | 5(x-4)=3(x+18) | | sqrt(4x+4)=sqrt(-5x-6) | | sqrt(4x+4)=sqrt(2x+2) | | 11=-15m | | (y-12)(y-1)=0 | | -42=6x+6x-6 | | 11=-15x-7 | | 40=(24/4)h | | 4-6m=-2 | | 6[3-(-4x-3)]=72x+108 | | 4x+3=2-8x | | -36t=-8 | | 5b-4=-8 | | 4/12x5/6 |