Предмет: Математика, автор: 12312z

0,7 * 5⁄7 + 8,4 * 3⁄7;

Ответы

Автор ответа: Rostovа

0

1.) 0,7*5/7= 7/10*5/7=1/2=0,5
2.) 8,4*3/7=84/10*3/7=36/10=3,6
3.)0,5+3,6=4,1

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