Дано:
Решение:
\[ y = 7x - 5 \]
\[ 3x - 2(7x - 5) = -1 \]
\[ 3x - 14x + 10 = -1 \]\[ -11x = -1 - 10 \]\[ -11x = -11 \]
\[ x = \frac{-11}{-11} \]\[ x = 1 \]
\[ y = 7(1) - 5 \]\[ y = 7 - 5 \]\[ y = 2 \]
Проверка:
Ответ: x = 1, y = 2