If it's not what You are looking for type in the equation solver your own equation and let us solve it.
q in (-oo:+oo)
4*(2-(q/3)) = 12-((28*q)/3) // - 12-((28*q)/3)
4*(2-(q/3))+(28*q)/3-12 = 0
4*(2-1/3*q)+(28*q)/3-12 = 0
(3*4*(2-1/3*q))/3+(28*q)/3+(-12*3)/3 = 0
3*4*(2-1/3*q)+28*q-12*3 = 0
24*q-36+24 = 0
24*q-12 = 0
(24*q-12)/3 = 0
(24*q-12)/3 = 0 // * 3
24*q-12 = 0
24*q-12 = 0 // + 12
24*q = 12 // : 24
q = 12/24
q = 1/2
q = 1/2
| (2x-5)(6-x)=0 | | y/2-1/8=3y-5/8 | | -x/4=28 | | 4(2-1/3)=12-28q/3 | | 2b-6-7b-3= | | 4x+3.8=2x-4.9 | | -8+4w=0 | | -110-6x=-74 | | 12y^4-19y^2-18=0 | | 1.2-27.6z=-3(9z-0.3) | | 21r-21=-6+6r | | f(9)=(9)-1 | | 4(2x-5)+15=-15x-17-6x | | 3+x/4=-2 | | 10(x+3)-(-9x-4)=x-5+5 | | 10y-20=-2(2y+3) | | 5x+3/4 | | f(x)=-7x^2+9x+6 | | -3(z+7)=4z | | 1-2(-1/2) | | 4-5b+2b-2= | | 5/2x+1/2x=2x+14/2+9/2x | | 24+2*2= | | 2x/x-4=8/x-4+5 | | -5(n-5)=3-4n | | -13+5y=7 | | (3x-4)(-4)= | | T=w+qm | | x/8+1=x-6 | | 14+4c=40 | | T=w+am | | x^2=4/9x+45/81 |