How to solve the equation that x (80-x) + 10 of 100 equals 25

How to solve the equation that x (80-x) + 10 of 100 equals 25

Is the Title X (80-x) / 100 + 10 = 25? The original equation is reduced to X & # 178; - 80x + 1500 = 0 → (X-30) * (x-50) = 0 by term shifting
The solution is: X1 = 30, X2 = 50

X-3 / 10 * x - (3 / 10 * x - 80) = 440 how to solve this equation

900

(10 - x) x (1 + 50%) = 10 + X, write the process of solving this equation

（10 - X ）x (1+50% )= 10 + X (10-x)(1+0.5)=10+x 1.5(10-x)=10+x 15-1.5x=10+x 2.5x=5 x=2
Hope to adopt

(1 + 5) x + 10 (50-2x) = 220, how to solve this equation?

Oh, I see. This is the problem of Huanggang in the first volume of primary school mathematics? Right! I just did it today! Let 1 yuan and 5 yuan have X (1 + 5) x + 10 (50-2x) = 220 6x + 500-20x = 220 - 14x = - 280