Shawana, Dexter, and Tilana are correct.
<h2>
Given that</h2>
Equation: 
<h3>We have to determine</h3>
Which students are correct?
<h3>According to the question</h3><h3>
Equation: 
</h3>
The correct way to solve the equation is;
SHAWNA
Statement: Dividing each side of the equation by –2.5,

Here, Shawna is correct.
DEXTER
Statement: Distributing -2.5 to get -12.5 + 2.5 n + 2 = 15.

Hence, Dexter is correct.
" Tirana says, "I can begin by multiplying each side of the equation by Negative Start fraction 1 over 2. 5 End fraction to get 5 minus n minus 0. 8 = negative 6. "

Hence, Tilana is also correct.
Hence, Shawana, Dexter and Tilana are correct.
To know more about Equation click the link given belwo.
brainly.com/question/13904969