Question

Efectuați adunările:
1supra6+5supra4
13supra21+13supra21

Answer 1

a)1/6+5/4→aducem la acelasi numitor,care este 12

2/12+15/12=17/12

b)13/21+13/21=26/21

Answer 2

$\frac{1}{6}+ \frac{5}{4} =$ amplifici prima fractie cu4 si a doua cu 6
$\frac{4+30}{24}= \frac{34}{24} = \frac{17}{12}$
$\frac{13}{21} + \frac{13}{21} = \frac{26}{21}$