Автор - sabi0000

Помогите пожалуйста

Ответ

Автор - eqxzert

Ответ:

frac{2}{7}(1.4t - 3frac{1}{2}b) - 1.2(frac{5}{6}t - 0.5b)

frac{2}{7}(frac{7}{5}t - frac{7}{2}b) - frac{6}{5}(frac{5}{6}t - frac{1}{2}b)

(frac{2}{5}t - b) - (t - frac{3}{5}b)

frac{2}{5}t - b - t + frac{3}{5}b

- frac{3}{5}t - frac{2}{5}b

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