Question

(x-y) - (x+y) answer fast​

Answer 1

$\huge\blue{\underline{\sf{\underline{Answer↓}}}}$

$\huge \green { \sf{2}}$

$\huge\blue{\underline{\sf{\underline{Explanation↓}}}}$

$\sf \: x - y \\ \sf if \: x = 1 \: and \: y \: = 2 \\ \sf = (x = 1) - (y = 2) \\ = 1 - 2 = 2 - 1 \\ = 1 \\ 1 - (x + y) \\ = 1 - (1 + 2) \\ 1 + 2 = 3 \\ = 1 - 3 \\ 1 - 3 = \green {\: - 2} \\ 3 - 1 = \green{2}$