Автор - marinakot1996

1)4,5-2,5:3/4/2:(1 1/4-2 3/4)=
2)3/4:√3/√27=

Ответ

Автор - matroskin77
2) 3÷4 ÷(/3÷/27)^2= 3÷4 ÷ 3÷27=3÷4÷1÷9=3÷4×9 =27÷4=6.3÷4

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