Question

VA rogg URGENTTTTT DAU COROANA CINEVA SA MA AJUTE CU EXERCITIILE ACESTEA DAU COROANA URGENTTT!!!!!!!
$\frac{3}{8} + \frac{5}{8} - \frac{1}{4} =$
$\frac{1}{3} + \frac{2}{3} + \frac{1}{10} - \frac{1}{10} =$
$\frac{7}{9} - \frac{6}{9} + \frac{8}{9} - \frac{4}{7} =$
$\frac{2}{9} + \frac{3}{9} + \frac{4}{9} - \frac{2}{8} =$

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Answer 1

La prima 3 supra 4

La a doua 1

La a treia 27 supra 63

La ultima 54 supra 72