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3х - было яблонь (минус 14 вырубили)
Деревьев обоих видов стало поровну
Уравнение: 3х - 14 = х + 10
3х - х = 10 + 14
2х = 24
х = 24 : 2
х = 12 - груши
3х = 3 * 12 = 36 - яблони
ответ: 12 груш и 36 яблонь было в саду.
Проверка:
36 - 14 = 12 + 10
22 = 22 - стало поровну