Question

Выполните 5, 6 задания . Пожалуйста скорее!

Answer 1

1) $y-2 \frac{1}{5} =5 \frac{2}{5}$
$y - \frac{11}{5} = \frac{27}{5}$
$y = \frac{27}{5} + \frac{11}{5}$
$y = \frac{38}{5}$
2) $(x -3 \frac{13}{21})+2 \frac{10}{21} = 7 \frac{2}{21}$
$(x - \frac{76}{21})+ \frac{52}{21} = \frac{149}{21}$
$x - \frac{76}{21} + \frac{52}{21} = \frac{149}{21}$
$x - \frac{8}{7} = \frac{149}{21}$
$x = \frac{149}{21} + \frac{8}{7}$
$x = \frac{173}{21}$ (x ≈ 8.2381; x = $8 \frac{5}{21}$


3)$x : 9 = 8 \frac{5}{9}$
$\frac{x}{9} = \frac{40}{9}$
x = 40