19 - h - h = -13
14 + 6a - 8 = 18
25 = 7 + 3k - 12
5n - 16 - 8n = -10 (you'll get a negative answer)
-34 = y + 42 - 5v
x - 1 + 5x = 23
42j + 18 - 19j = -28 (you'll get a negative answer)
-49 = 6c - 13 - 4c (you'll get a negative answer)
-28 + 15 - 22z = 31