The solution will be: 
<em><u>Explanation</u></em>
The given inequality is: 
First we will subtract
from both sides. So.....

Now we will subtract 13 from both sides. So.....

Then we need to divide both sides by -3. As here we are <u>dividing the inequality by a negative number, so we need to switch the inequality symbol</u>. So, we will get.......

Thus, the solution will be: 
Answer:
xxx-4
Step-by-step explanation:
(1×xxx)-4
yietisyksykd
The enthalpy of a reaction can be measured using a Calorimeter
Answer:
8.75!
Step-by-step explanation:
the answer is x-2.5=6.25
6.25+2.50=8.75