Решите уравнение:а) 9 16/51 – с = 4 11/34 б)а - 5 2/15 = 3 5/12. Created by bevzan98. matematika-ru

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sedinalana

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A)c=9 16/51-4 11/34=9 32/102-4 33/102=8 134/102-4 33/102=4 101/102
b)a=5 2/15+3 5/12=5 8/60+3 25/60=8 33/60=8 11/20

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zhenyaM2002

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9 16/51 - с = 4 11/34
с= 9 16/51 - 4 11/34 = 9 32/102 - 4 33/102
х= 4 101/102
проверим:
9 16/51 - 4 101/102 = 4 11/34
9 32/102 - 4 101/102 = 4 11/34
(950 - 509)/102 = 4 11/34
441/102 = 4 11/34
147/34 = 4 11/34
4 11/34 = 4 11/34

а - 5 2/15 = 3 5/12
а = 3 5/12 + 5 2/15 = 3 25/60 + 5 8/60 = 8 33/60
а= 8 11/20
проверим:
8 11/20 - 5 2/15 = 3 5/12
8 33/60 - 5 8/60 = 3 5/12
3 25/60 = 3 5/12
3 5/12 = 3 5/12

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