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)
8/20 = x/6.5 // - x/6.5
8/20-(x/6.5) = 0
8/20-0.15384615*x = 0
2/5-0.15384615*x = 0 // - 2/5
-0.15384615*x = -2/5 // : -0.15384615
x = -2/5/(-0.15384615)
x = 2.60000007
x = 2.60000007
| 3(2-8n)=3n+6 | | 2c^2-7c-200= | | 24x+13y=1800 | | Y+6.55=9.63 | | (W-4/9)=-3/2x3/5 | | 4v^2-15v+9= | | 6-6x-4=8 | | 6+5w=w-2+2w | | 0.62= | | w/27=32 | | 1/2x-3/4=3/5 | | [4x+1]=3 | | 20=x/2-13 | | 3=7-2t | | 3x^3-6x^2-135x= | | 20-3x-15=8 | | 1/(2x-1)=4/(8x-4) | | 5x-2x-2=10 | | 3x-15+2x-2=8 | | 8/20=18/x | | T+7=4t | | 14x^2+3x+-2=0 | | 2.97n=18 | | x=-2y/3-5 | | 11x(a-4)-5(a-4)= | | 20X+2=4X-2 | | -4x(x-10)= | | 2g-3=-29 | | (3x+6)+(-4x+8)= | | 20/8=x/18 | | (x^2-8x+16)= | | 42=3(3x-6) |