Răspuns :

[tex] \bf \dfrac{98}{45}- \dfrac{19}{21} = [/tex]

[tex]\bf \dfrac{98 \cdot7}{315}- \dfrac{19\cdot 15}{315} = [/tex]

[tex]\bf \dfrac{686}{315}- \dfrac{285}{315} = [/tex]

[tex] \boxed{\bf \dfrac{401}{315}}[/tex]

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