Na przykładzie tego zadania:
0,(3)
0,3333333.....=/*10
3,33333....=10x/-x
3,333333....-x=10x-x
3,333333....-0,333333....=9x
3=9x/:9
x-3/9=1/3
Rązwiaż tak samo ta liczbę 0,(531)
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x=0,531531...
1000x=531,531531...
1000x-x=531,531531...-0,531531...
999x=531
x=531/999
x=59/111
0,(531)=x \ \ /
531,(531)=1000x \\
1000x-x=531,(531)-0,(531) \\
999x=531 \ \ /:999
x=
x=