Решение:
(3/5 − 20) ⋅ 5/9 − 5/3 = (3/5 − 100/5) ⋅ 5/9 − 5/3 = (−97/5) ⋅ 5/9 − 5/3 = −97/9 − 5/3 = −97/9 − 15/9 = −112/9 = −12 \(\frac{4}{9}\)
Ответ: −12 \(\frac{4}{9}\)