Ответ:
Объяснение:
a)
x=0,(27)
100x=27,(27)
100x-x=27,(27)-0.(27)
99x=27
x=27/99
0,(27)=27/99
б)
x=1,3(12)
10x=13,(12)
1000x=1312,(12)
1000x-10x=1312,(12)-13,(12)
990x=1299
x=1299/990
1,3(12)=1299/990
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Ответ:
Объяснение:
a)
x=0,(27)
100x=27,(27)
100x-x=27,(27)-0.(27)
99x=27
x=27/99
0,(27)=27/99
б)
x=1,3(12)
10x=13,(12)
1000x=1312,(12)
1000x-10x=1312,(12)-13,(12)
990x=1299
x=1299/990
1,3(12)=1299/990