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 = 28*29*(1/2) // - 28*29*(1/2)
a-(28*29*(1/2)) = 0
a-406 = 0
a-406 = 0 // + 406
a = 406
a = 406
| -2x+36=2(8-3x) | | v^2=64 | | m^2-6m=-3 | | 3x+9y=30 | | 5-2/3n=99 | | x^4+8x^3+13x^2-32x-68=0 | | y^3=64y | | 8.5b-9.5=3.1b+1.5 | | 1=8/9-x | | 3/5x-1/4x+14=7/10x | | -7y+4=-5y+2y-3 | | 3(h-5)+2h=2h+15 | | -1/2m+3=57 | | 50=3n+2 | | 6+2x=3x+4 | | 1/2m+3=57 | | -10+2x+3(5-x)=.5(4x-8) | | 3/22=6/11+h | | x/2-3/4=10-15x/6 | | 2/3(9x-3)-4+24 | | -1=-12/-16+b | | 1/4n-20=-45 | | (10-2h)/(10+2h) | | (7+z)(5z-3)=0 | | d=2c+2d | | 3(x+2)=-9x-7 | | -2/3x-10 | | 15/4+h=17/2 | | 3/8x+6 | | (X+9)(x+4)=76 | | 1=-2 | | 4-3(x+2)=5(4-x) |