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)
(-2/5)*(20*x-(5*y)) = 0
(-2/5)*(20*x-5*y) = 0
-2/5*(20*x-5*y) = 0
20*x-5*y = 0 // + -5*y
20*x = -(-5*y) // : 20
x = (-(-5*y))/20
x = y/4
x = y/4
| m+2n=1 | | 3[10+(6-4)-3(2+1)]= | | 2+2[3+4(7-5)]= | | x^2+x=675 | | 7u+v=0 | | 5x+6/6=3x-1 | | u-v=0 | | (x*4.219)+(1.09x*21.750)=886.7793 | | y=(lnx^3)(e^2x) | | 6x+12y=30 | | 810000=x-.2x | | 3g-24=-4h | | (8x^1/5)^4/3 | | 5x+2x=6x | | 3p-2=-9 | | -6u+21=30 | | 12.8+32=f | | 2/5x=35 | | 3a+9b=8b-a | | 16x+9=16x-9 | | 8(x-5)=8x-40 | | (2w+i)/w-i=(3w+4i)/w+3i | | 4j-8k=-4 | | 5x+7x=11x | | 11k-[4k+(-4+6k)]= | | z^2-(3+2i)z+(1+3i)=0 | | 5c=315 | | 5+c=315 | | 5/9c=-9 | | 1/6(2x-1)=7 | | 6x+15-8-8x=7 | | 7x+7x=13x |