Question

efeteu as adicoes 3/7+1/2+1/21

Answer 1

7,2,21|2
7,1,21|3
7,1,7 |7
1,1,1               2 x 3 x 7= 42

$\frac{18 +21 +2}{42}$

$\frac{41}{42}$

Bons estudos!