Question

X-9=20+2 ????????????

Answer 1

x-9 =22
x=22 +9
x=31
31-9 =22

Answer 2

$x - 9 = 20 + 2 = \ \textgreater \ x - 9 = 22 = \ \textgreater \ x = 22 + 9 = \ \textgreater \ \boxed{\boxed{ x = 31 }} = \ \textgreater \ \underline{S = 31}$