Question

3целых4/9+(8целых-d)=6целых5/9

Answer 1

$3 \times \frac{4}{9} + 8 - d = 6 \times \frac{5}{9}$
$11 \times \frac{4}{9} - d = 6 \times \frac{5}{9}$
$d = 11 \times \frac{4}{9} - 6 \times \frac{5}{9}$
$d = 4 \times \frac{8}{9}$

Answer 2

$\frac{4}{3} + 8 - d = \frac{59}{9}$
$\frac{28}{3} - d = \frac{59}{9}$
$- d = \frac{ - 25}{9}$
$d = \frac{25}{9} = 2 \times \frac{7}{9}$
вроде так)))