If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
(8*x)/c-((7*x)/b) = a // - a
(8*x)/c-a-((7*x)/b) = 0
(8*x)/c-a-7*b^-1*x = 0
8*c^-1*x-a = 0 // + a
8*c^-1*x = a // : 8*c^-1
x = a/(8*c^-1)
x = a/(8*c^-1)
| 1.7*3.9+3.9y=8.2 | | 12-18j=15-20j | | 5x-45000=x | | 2a+2b=z | | 1.7*1.7+3.9y=8.2 | | x/2=55000+(x-10000) | | 2x-x=90000 | | z(z^3+1)=10+z^4 | | 24x-6=20x+10 | | x(5x-3)=(5x+8)(x-3) | | 2x-(4x+8)=2x-32 | | 3sec^2x-5=4tanx | | 0=16x^2-64x+39 | | 2x^2+12x=-17 | | v+5=3 | | -0.9(-0.9)-0.6y=2.3 | | 0.25x^2-60X=-3344 | | -0.9(-0.6)-0.6y=2.3 | | 0.25x^2-60X=-3600 | | sin(8x)-sin(2x)=Sin(3x) | | 5y-15y+50=0 | | (5-2x)+8(2x+4)+5=0 | | 3.7(-0.1)-0.1y=-9.2 | | log(2-3x)+log(3-2x)=1.6 | | 3.7(-0.1)-9.1y=-9.2 | | 3.7(-0.1)-0.1=-9.2 | | 3.7*-0.1(-0.1)=-9.2 | | y=-4/9x-8 | | 3.7*3.7-0.1y=-9.2 | | 19-x=18 | | -10=x^3-5x^2+3x-7 | | 20x^2-39x+18=0 |