Question

помогите!!!!!!!!!!!!!!!!!!!!!!

Answer 1

$4 \frac{253}{540} + 18 \frac{307}{540 } = (4 + 18) + ( \frac{253}{540} + \frac{307}{540} ) = \\ \\ = 22 + \frac{28}{27} = 22 + 1 \frac{1}{27} = 23 \frac{1}{27}$


Готово.