Answer: 1. the negative of the conclusion is true
Given the expression

The expression that is equivalent to the given expression is given by:
Convert any mixed numbers to fractions.
Then your initial equation becomes:
15
4
×
4
1
Applying the fractions formula for multiplication,
=
15
×
4
4
×
1
=
60
4
Simplifying 60/4, the answer is
15
Answer: 50.4537849152
Hope this helped!