Question

Scrie ca numar zecimal fractia ordinara 2+4+6....+46.
———————

3+6+9....+72
Pls repede exercitiul 2

Answer 1

2+4+6+...+46/3+6+9+...+72=

=2(1+2+3+...+23)/3(1+2+3+...+24)=

=2×23×24/2/3×24×25/2=

=23×24/75×12=

=23×2/75=

=46/75=

=0.61(3)