Предмет: Математика, автор: albinaomel4uk

Решите пожалуйста)))

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Автор ответа: tatsach

1

1)2,4*(0,3+0,7)=2,4*1=2,4
2)(1,5-0,9)(1,5+0,9)=0,6*2,4=1,44
3)2,4:1,44=12/5*25/36=5/3=1 2/3

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