Решение:
- \( 13b + 19b = (13 + 19)b = 32b \)
- \( 44d - 37d = (44 - 37)d = 7d \)
- \( 34n + n = (34 + 1)n = 35n \)
- \( 127q - q = (127 - 1)q = 126q \)
- \( 36y - 19y + 23y = (36 - 19 + 23)y = (17 + 23)y = 40y \)
- \( 49a + 21a + 30 = (49 + 21)a + 30 = 70a + 30 \)
Ответ: 1) 32b; 2) 7d; 3) 35n; 4) 126q; 5) 40y; 6) 70a + 30.