1000 - x = 35 + 6 × 8.81 ÷ y = 63 ÷ 7

1000 - x = 35 + 6 × 8.81 ÷ y

1000 - x = 35 + 52.86 ÷ y

x = 1000 - 35 - 52.86 ÷ y

x = 965 - 52.86 ÷ y

x × 8 = 100 - (4 × 9)

8x = 100 - 36

8x = 64

x = 64 / 8

x = 8

Подставляем x = 8 в первое уравнение:

1000 - 8 = 35 + 6 × 8.81 ÷ y

992 = 35 + 52.86 ÷ y

992 - 35 = 52.86 ÷ y

957 = 52.86 ÷ y

y = 52.86 / 957

y ≈ 0.055

Ответ: x = 8, y ≈ 0.055