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(2,8+0,3+[tex] \frac{1}{15} [/tex]) : 3

Răspuns :

2,8= 2 intregi 8/10= 2 intregi 4/5= 14/5
0,3= 3/10

(14/5 +3/10 +1/15 ) :3  aducem la acelasi numitor in paranteza
(84+9+2)/30 :3=
=95/30 :3
=19/6 * 1/3
=19/18