Răspuns :
[tex]D+E=73 \\
E.|----| ~~~~~~~~~~~~~~~~~~~~~~~~~~63 \\
D.|----|--------------------| \\
E+E+63=73 \\
2E=10 \\
\boxed{E=5} \\
D=5+63 \\
\boxed{D=88}[/tex]
E D
[_____]______________________________] D+E=73
D-63=E
E 63
[______]_______________________]
Daca le adunam avem D+E+D-63=E+73
2D=73+63
D=136/2
D=68
68+E=73
E=73-68
E=5
Solutia:Elena a colectionat 5 de frunze si Daria 68 de frunze