4. [tex]x = \frac{3}{7} \times y[/tex]
[tex] \frac{y}{2 } = x + 2[/tex]
[tex]y = 2 \times x + 4[/tex]
[tex]y = \frac{6}{7} \times y + 2[/tex]
7y = 6y + 14
y=14
x= 14/2 -2= 5
5. 7 primul borcan
5 al 2-lea
6. x+x+1=42
2x+1=42
2x = 41
x= 41/2 = 20.5
x+1 = 21.5
