Zamień na ułamek zwykły:
1) 0,(6)
2) 0,(45)
3) 0,2(7)
proszę o szybkie rozwiązanie!
1. 3/9
2. 45/99
3. 268/990=134/495
1) 0,(6)x = 0,666...10x = 6,666...10x - x = 6,666... - 0,666..9x = 6/:9x = 6/9=============================
2) 0,(45)x = 0,4545...100x = 45,4545...100x - x = 45,4545... - 0,4545...99x = 45/:99x = 45/99=============================
3) 0,2(7)x = 0,277...100x = 27,777...100x - x = 27,777... - 0,277..99x = 27,5/:99x = 27,5/99
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1. 3/9
2. 45/99
3. 268/990=134/495
1) 0,(6)
x = 0,666...
10x = 6,666...
10x - x = 6,666... - 0,666..
9x = 6/:9
x = 6/9
=============================
2) 0,(45)
x = 0,4545...
100x = 45,4545...
100x - x = 45,4545... - 0,4545...
99x = 45/:99
x = 45/99
=============================
3) 0,2(7)
x = 0,277...
100x = 27,777...
100x - x = 27,777... - 0,277..
99x = 27,5/:99
x = 27,5/99