Предмет: Математика, автор: saba27639625

4) (5,4-2 1/3)÷ 7 2/3=
5) ( 2 1/3 +0,25)× 0,12=
6) (7,6 - 4 3/4)÷1,9=

Ответы

Автор ответа: nur17kz
10

Ответ:

4. (5,4-2¹/₃):7²/₃=0,4.

1) 5,4-2¹/₃=5²/₅=2¹/₃=27/5-7/3=(27*3-7*5)/15=(81-35)/15=46/15

2) 46/15:7²/₃=46/15:23/3=46*3/(15*23)=2/5=0,4.

5) (2¹/₃+0,25)*0,12=(7/3+1/4)*0,12=((7*4+1*3)/12)*0,12=((28+3)12)*-0,12-

(31/12)*(12/100)=31*12/(12*100)=31/100=0,31.

3) (7,6-4³/₄):1,9=(76/10-19/4):1,9=(38/5-19/4):1,9=((38*4-19*5)/20):1,9=

=((152-95)/20):1,9=57/20:19/10=57*10/(20*19)=3/2=1,5.

Пошаговое объяснение:

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