👤
Aureliaflorinap1
a fost răspuns

a) 1/4•7+1/7•10+1/10•13+...+1/25•28
b) 1/1+2+1/1+2+3+1/1+2+3+4+1/1+2+3+4+5
c) 66/77+202/303+1414/2121

Răspuns :

Aruama
b) 1/1+2+1/1+2+3+1/1+2+3+4+1/1+2+3+4+5=
1+2+1+2+3+1+2+3+4+1+2+3+4+5=34

Alte intrebari