There is no 'x' in your equation. It got lost in the process of writing
the question.
The 'x' could be next to the 20, the 4, the 5, or the 16, and it would
have a different value for each case.
Alternatively, this question can be viewed as an exercise in logic. Since 20 minus 4 over 5 is NOT equal to 16, x can be anything. The "if" clause is FALSE so the truth or falsity of the "then" clause is irrelevant.
16 minus -4 is 20.
Converting to twentieths, we get 8 over 20 minus 15 over 20, resulting in minus 7 over 20.
97 minus 94 minus 20 is equal to -17.
16/20 = 8/10 = 4/5
14/20 - 3/5 = 14/20 - 12/20 = 2/20 = 1/10
16 minus -4 is 20.
(9 divided by 16) minus (9 divided by 20) = 0.1125
Converting to twentieths, we get 8 over 20 minus 15 over 20, resulting in minus 7 over 20.
14/20 minus 3/5 is 1/10
97 minus 94 minus 20 is equal to -17.
16/20 = 8/10 = 4/5
3 and 16/24
14/20 - 3/5 = 14/20 - 12/20 = 2/20 = 1/10
3/5 - 1/4 = 12/20 - 5/20 = 7/20.
3/5 - 3/4 = 12/20 - 15/20 = (12 - 15)/20 = -3/20
It is: 16 - -4 = 20
36 - 20 = 16