19
2n plus 7 equals 19 2n equals 12 n equals 6
y = 12
19 (7 + 12 = 4x - 3x)
7
4y + 7 = 19 ∴ 4y = 12 ∴ y = 3
4y + 19 = 74y = 7-194y = -124y/4 = -12/4y = -3
4x plus 7 plus 3x equals 19 plus xx = 2
-7
19
It is asking you to prove that you are a human, not a macro or bot trying to spam them with messages. Just do that math, and enter the number. In this case, the answer is 19.
19