Solving binary linear equation x-20 = y0.25x = (1 + 0.25) y

Solving binary linear equation x-20 = y0.25x = (1 + 0.25) y


X-20 = 0.25xy = 1.25y, is that a bivariate quadratic equation



Solve a quadratic equation of two variables: x + y = 36 and 25X: 40y = 1:2


The solution from 25X: 40y = 1:2 to 50x = 40y to 5x-4y = 0.1 from x + y = 36 to 4x + 4Y = 144 2 5x + 5Y = 180 3 equation 1 plus equation 2 to 9x = 144 x = 16