Algebraically.
9X + 11 = 65
subtract 11 from each side
9X = 54
do this
(9/9)X = 54/9
X = 6
===============easy check
How about 65 because 6+5 = 11
65
-65
-65
92 - 27 = 65
65 has 13 as a factor because 13 divides into 65 evenly with no remainder. The sum of the digits of 65 is 11 because 6 + 5 = 11
How about 65 because 6+5 = 11
65
65
65
65
65
-65
20 + 45 = 65 20 x 45 = 900
65 - x
Their product.
6 + 5 = 11