If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( a )
a = 0
a = 0
a = 0
a in (-oo:0) U (0:+oo)
(1/2)*a = 2/a-(3/8) // - 2/a-(3/8)
(1/2)*a-(2/a)+3/8 = 0
(1/2)*a-2*a^-1+3/8 = 0
1/2*a^1-2*a^-1+3/8*a^0 = 0
(1/2*a^2+3/8*a^1-2*a^0)/(a^1) = 0 // * a^2
a^1*(1/2*a^2+3/8*a^1-2*a^0) = 0
a^1
(1/2)*a^2+(3/8)*a-2 = 0
(1/2)*a^2+(3/8)*a-2 = 0
DELTA = (3/8)^2-(-2*4*(1/2))
DELTA = 265/64
DELTA > 0
a = ((265/64)^(1/2)-(3/8))/(2*(1/2)) or a = (-(3/8)-(265/64)^(1/2))/(2*(1/2))
a = (265/64)^(1/2)-3/8 or a = -((265/64)^(1/2)+3/8)
a in { -((265/64)^(1/2)+3/8), (265/64)^(1/2)-3/8}
a in { -((265/64)^(1/2)+3/8), (265/64)^(1/2)-3/8 }
| (1/2+x)-1/2=0 | | (1/2*x)+(x+5)+(x)=100 | | -x+2(-z)+3z=-1 | | -x+2(-2)+3z=-1 | | (1/2)z=10 | | (1/2)y=4+(1/2)y | | (1/2)y=(-3/4)y-40 | | (4X-3)/27=63 | | (4*X-3)/27=63 | | (1/2)y-1=(1/3) | | (1/2)y-(3/10)=(2/10)-(1/2)y | | (1/2)y-(1/3)=(1/4)y+(1/5) | | (1/2)x=9 | | 7z+7y=0 | | (1/2)x=10 | | (1/2)x=1 | | 33=21+8k | | (4*x-3)27=63 | | (1/2)x=(7/10) | | (1/2)x-6=7+(1/2)x | | (4x-3)27=63 | | (1/2)x-6=12 | | (1/2)x-4=(3/4)x+12 | | (1/2)x-4=(3/4)x | | 4x=68-4 | | (1/2)x-3=11 | | (1/2)x-1=15 | | (1/2)x-12=4 | | (1/2)x-1/4=6 | | (1/2)x-(5/3)=(-1/2)+(19/4) | | (1/2)x-(3/2)=(5/2) | | 48-7/5 |