Question 615563
Solve for x:
{{{4x(x-5)-5x(x-4) = -1}}} Expand the left side.
{{{(4x^2-20x)-(5x^2-20x) = -1}}} Simplify.
{{{(4x^2-5x^2)-20x+20x = -1}}}
{{{-x^2 = -1}}} Multiply by -1.
{{{x^2 = 1}}} Take the square root of both sides.
{{{x = 1}}} or {{{x = -1}}}