\[ (83a + 24b - 62c) \cdot 22 = 83a \cdot 22 + 24b \cdot 22 - 62c \cdot 22 \]
\[ = 1826a + 528b - 1364c \]
\[ (5c + 8 + 9d) \cdot 6 + 3 - (4c - 2 - d) \]
\[ = 30c + 48 + 54d + 3 - 4c + 2 + d \]
\[ = (30c - 4c) + (54d + d) + (48 + 3 + 2) \]
\[ = 26c + 55d + 53 \]
\[ (340x + 5600y - 50) : 10 = \frac{340x}{10} + \frac{5600y}{10} - \frac{50}{10} \]
\[ = 34x + 560y - 5 \]
Ответ: а) 1826a + 528b - 1364c; б) 26c + 55d + 53; в) 34x + 560y - 5