Question

11-[(106x2-728:4):a]x2=5

Answer 1

11-[(106x2-728:4):a]x2=5
[(212-182):a]x2 = 11-5
(30:a) × 2 = 6
30 : a = 6:2
30:a = 3
a = 30 : 3
a = 10

Answer 2

11-[(212-182):a]2=5
(30:a)2=11-5
(30:a)2=6
(30:a)2=6
30:a=6:2
30:a=3
a=30:3
a=10
R:S={10}