zamień na ułamek zwykły
a) 0,2(36)
b)1,3(124)
a) 0,2(36)x = 0,236...1000x = 236,3636...1000x - 10x = 236,3636.. - 2,3636...990x = 234/:990x = 234/990======================================b)1,3(124)x = 1,3124...10000x = 13124,124...10000x - 10x = 13124,124... - 13,124...9990 = 13111/:9990x = 13111/9990
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a) 0,2(36)
x = 0,236...
1000x = 236,3636...
1000x - 10x = 236,3636.. - 2,3636...
990x = 234/:990
x = 234/990
======================================
b)1,3(124)
x = 1,3124...
10000x = 13124,124...
10000x - 10x = 13124,124... - 13,124...
9990 = 13111/:9990
x = 13111/9990