Question

3 supra 8 + 13 supra 117

Answer 1

3/8 +13/(9*13) = 3/8 + 1/9 = 27/72 +8/72= 35/72

Answer 2

$\frac{3}{8} + \frac{13}{117} =$ -aducem la acelsi numitor anume 936
$\frac{351}{936} + \frac{104}{936} = \frac{455}{936}$ -simplificam prin 13
=$\frac{35}{72}$