1. Решения примеров:
\[ 3 \cdot 7 + 3 = 21 + 3 = 24 \]
\[ 8 \cdot 3 - 3 = 24 - 3 = 21 \]
\[ 3 \cdot 6 + 3 = 18 + 3 = 21 \]
\[ 3 \cdot 7 - 3 = 21 - 3 = 18 \]
\[ 3 \cdot 10 - 3 = 30 - 3 = 27 \]
\[ 3 \cdot 9 + 3 = 27 + 3 = 30 \]
Ответ: 24, 21, 21, 18, 27, 30