Question

Calculati :
9,6-3,(9)+0,25-2,1

Answer 1

$\frac{96}{10}-3 \frac{9}{9}+ \frac{25}{100}- \frac{21}{10}$
simplificam ce se poate
=$\frac{48}{5}-3+ \frac{1}{4}- \frac{21}{10}$
aducem la acelasi numitor, adica 20
=$\frac{192}{200}- \frac{60}{20}+ \frac{5}{20}- \frac{42}{20}$

=$\frac{95}{20}$


=$\frac{19}{4}$