Question

aflati media aritmetica
$1 \frac{1}{7} si \: 2 \frac{3}{7}$
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Answer 1

 

$\displaystyle\bf\\m_a=\frac{1\dfrac{1}{7}+2\dfrac{3}{7}}{2}\\\\\\m_a=\frac{\dfrac{1\times7+1}{7}+\dfrac{2\times7+3}{7}}{2}\\\\\\m_a=\frac{\dfrac{8}{7}+\dfrac{17}{7}}{2}\\\\\\m_a=\frac{\dfrac{8+17}{7}}{2}\\\\\\m_a=\frac{\dfrac{25}{7}}{~~2~~}\\\\\\m_a=\frac{25}{14}\\\\\\\boxed{\bf m_a=1\frac{11}{14}}$