Question

7supra30 minus 3supra20 dau coroana! repede plz!

Answer 1

Rezolvare :
$\frac{7}{30} - \frac{3}{20} = \frac{14 - 9}{60} = \frac{5}{60} = \frac{1}{12}$

Answer 2

$\frac{7}{30} - \frac{3}{20} = \frac{7 \times 2}{30 \times 2} - \frac{3 \times 3}{20 \times 3} = \frac{14}{60} - \frac{9}{60} = \frac{14 - 9}{60} = { \frac{5}{60} }^{(5} = \frac{1}{12}$