Question

решить 9 24/27+12 13/27

Answer 1

$9 \frac{24}{27} + 12 \frac{13}{27} = (9 +12) + ( \frac{24}{27} + \frac{13}{27}) = 21+ ( \frac{24+13}{27}) = 21 + \frac{37}{27} = 21 + 1 \frac{10}{27}$

 = $22 \frac{10}{27}$