Ответ:
5.(5 1/2+ 2 3/5)×5/9=4,5
1)5 1/2+ 2 3/5=5+6/11=7 11/10=8 1/10
2)8 1/10×5/9=81/10×5/9=9/2 или 4 1/2
6.(7- 2 5/16)×4/25=0,75
1)7- 2 5/16=6 16/16-2 5/16=4 11/16
2)4 11/16×4/25=75/16×4/25=3/4
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Ответ:
5.(5 1/2+ 2 3/5)×5/9=4,5
1)5 1/2+ 2 3/5=5+6/11=7 11/10=8 1/10
2)8 1/10×5/9=81/10×5/9=9/2 или 4 1/2
6.(7- 2 5/16)×4/25=0,75
1)7- 2 5/16=6 16/16-2 5/16=4 11/16
2)4 11/16×4/25=75/16×4/25=3/4