Respuesta :

[tex]10*10-(1*10+1*\frac{1}{10})\\100-(10+\frac{1}{10})\\100-(\frac{100}{10}-\frac{1}{10})\\\frac{1000}{10}-(\frac{99}{10})\\\frac{901}{10}\\90.1[/tex]

90.1
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