[tex]\it\ \left.\begin{aligned}a:2\ \ |\rule{30}{0.8}| \\ a\ \ \ \ \ \ \ \ |\rule{30}{0.8}| |\rule{30}{0.8}|\\ 2a\ \ \ \ \ \ |\rule{30}{0.8}| |\rule{30}{0.8}| |\rule{30}{0.8}| |\rule{30}{0.8}|\end{aligned}\right\}\ 49[/tex]
Avem 7 segmente egale.
49:7 = 7 (un segment)
a = 2· 7 = 14
