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j) 2 1/3 + 1/3 •3/5+7/2 :14/10


Răspuns :

2 1/3+ 3/15+7/2•10/14=35/15+3/15+70/28=38/15+70/28=2 8/15+2 14/28= 2 8/15+2 1/2=2 16/30+2 15/30=4 31/30=5 1/30
[tex] \frac{21}{3} + \frac{1}{3} \times \frac{3}{5} + \frac{7}{2} \times \frac{10}{14} [/tex]

[tex] \frac{21}{3} + \frac{1}{5} + \frac{5}{2} [/tex]

[tex] \frac{210}{30} + \frac{6}{30} + \frac{75}{30} [/tex]

[tex] \frac{291}{30} = \frac{97}{10} [/tex]