Question

A-8x/a : ax-8x^2/a^2 при a= 27, x= 45

Answer 1

$\frac{ a-8x}{a}$ : $\frac{ax-8x^2}{a^2}$ = $\frac{ a-8x}{a}$ :
$\frac{x(a-8x)}{a^2}$ = $\frac{ a-8x}{a}$ * $\frac{a^2}{x(a-8x)}$ = $\frac{(a-8x)*a^2}{a*x(a-8x)}$ = $\frac{a}{x}$.
При а = 27, х = 45:
$\frac{27}{45}$ (сокращаем на 9) = $\frac{3}{5}$ = 0,6.