1.)
\(r=1,1\overline{6}\)
\(100r=116,\overline{6}\)
-(\( 10r= 11,\overline{6}\))
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\(90r=105\)
\(r=\frac{105}{90}=\frac{21}{18}=\frac{7}{6}\)
2.)
\(s=4,\overline{72}\)
\(100s=472,\overline{72}\)
-(\( s = 4,\overline{72}\))
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\(99s=468\)
\(s=\frac{468}{99}=\frac{52}{11}\)
3.)
\( t = 2,5 \overline { 428571 } \)
\(10.000.000t=25.428.571,\overline { 428571 } \)
- (\( 10t = 25,\overline { 428571 } \))
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\(9.999.990t=25.428.546 \)
\(t= \frac{25.428.546}{9.999.990}=\frac{89}{35} \)