Răspuns :
[tex]ma = 12 \\ a = 10 \\ ma = \frac{a + b}{2} \\ 12 = \frac{10 + b}{2} \\ b + 10 = 2 \times 12 \\ b + 10 = 24 \\ b = 24 - 10 \\ b = 14[/tex]
[tex]ma = 12 \\ a = 10 \\ ma = \frac{a + b}{2} \\ 12 = \frac{10 + b}{2} \\ b + 10 = 2 \times 12 \\ b + 10 = 24 \\ b = 24 - 10 \\ b = 14[/tex]