10. L= lungimea= 43/4 m
l= lățimea= L-11/2m
[tex] l = \frac{43}{4}m - \frac{11}{2}m = \frac{43}{4}m - \frac{22}{4} m[/tex]
[tex]l = \frac{21}{4}m[/tex]
11. x= nr de pag ale cărții
1= prima zi; 2= a doua zi
[tex]1 - > > \: \frac{13}{25} \times x[/tex]
[tex]2 - - > \: \frac{4}{15} \times x[/tex]
[tex] \frac{13}{25} = \frac{39}{75} [/tex]
[tex] \frac{4}{15} = \frac{20}{75} [/tex]
--> in prima zi a citit mai mult
[tex] \frac{39}{75} > \frac{20}{75} [/tex]
[tex] \frac{39}{75} - \frac{20}{75} = \frac{19}{75} [/tex]
--> in prima zi a citit mai mult cu 19/75
