ДАЮ 25 БАЛЛОВ. Упростите выражение.
ах - ау/ 5х^2 у^2 × 5ух/ bу - bх

((ax-ay)/(5x²y²))*(5xy/(by-bx))=(a*(x-y)/(5x²y²))*(5xy/(b*(y-x))==a*(x-y)*5xy/(-5x²y²*b*(x-y)=-a/xy.