Răspuns:
[tex]1 \frac{7}{30} + (0.8 + ( - 2.13)) = \frac{37}{30} + (0.8 - 2.13) = \frac{37}{30} + ( - 1.33) = \frac{37}{30} - 1.33 = \frac{37}{30} - \frac{133}{100} = - \frac{29}{300} [/tex]
