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wieslawlozickip5w1nd

Ответ:

Объяснение:

b)

(5x-15y)/(x²-9y²)=    5(x-3y)/(x-3y)(y+3y)  = 5/(x+3y)

g) (6d-18c)/((d-3)²=   6c(d-3)/(d-3)²=6c/(d-3)

e)(y²-9)/(y²-6y+9)=   (y-3)(y+3)/(x-3)²=  (y+3)/(x-3)

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