Question

Simplificati fractia: 5+10+15+...525/3+6+9+...+315.Va rog Ajutati-ma

Answer 1

$\frac{5+10+15+...+525}{3+6+9+....+315}=\frac{5(1+2+3+...+105)}{3(1+2+3+...+105)}=\frac{5}{3}$

Answer 2

la numarator dam factor comun pe 5, iar la numitor pe 3
[5(1+2+3+...+105)]/[3(1+2+3+...+105)]=5/3