(161-х) делить ** 16 равно9

Question

(161-х) делить на 16 равно9

Answer 1

(161-х) : 16 = 9
161 - х = 144
161 - 144 = х
   х = 17     
(161-17) : 16 = 9

Answer 2

(161-х) / 16 = 9
(161-х) = 16 *9
(161-х) = 144
х = 161 - 144
х = 17.