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Сравни числа \(\boldsymbol a\) и \(\boldsymbol b\) .

1. \(a=7,(12); \ b=7,121212...;\)
   \(a\) [ \(\gt\) | \(\lt\) | \(=\) ] \(b\) .
2. \(a=0,616161; \ b=0,(6);\)
   \(a\) [ \(\gt\) | \(\lt\) | \(=\) ] \(b\) .
3. \(a=7,5(2); \ b=7,525252…;\)
   \(a\) [ \(\gt\) | \(\lt\) | \(=\) ] \(b\) .