Question

Даю 18 баллов за решение: задания 11 на фото

Answer 1

$x + y + z = 288 \\ 4y = z \\ 5x = y + z$

$z = 5x- y = 4y\\ \\ 5 x = 5y \\ x = y \\ x \ + x + 4x = 288 \\ x = \frac{288}{6} = 48$

$y = 48 \\ z = 4 \times 48 = 192$

$192 - 48 = 144$