Question

efectuati.(7pe 15+1pe5)×3
(3pe7-1pe2)×14​

Answer 1

Răspuns:

(7/15+1/5)×3

amplificam 5 cu 3

7+3/15×3

10/15×3simplificam 15 cu 3

10/5=2

(3/7-1/2)×14

amplificam 7 cu 2 si 2 cu 7

6+7/14×14

13/14×14

simplificam 14 cu 14=13

Succes! :)