Две стороны треугольника относятся как 7 : 8, а угол между ними равен 120 Найдите стороны треугольника, если его периметр равен 84 см

My breakfast.
In morning i eat salad with tomato, cucumber, paper and salary. Eat eggs with becon.
Drink tea with sweet.

Usually I have a breakfast at 7.30. My Mummy prepares it for me. I have a sandwich with cheese and a cup of green tea.