Is this a truck question?
if ita not amd its asking that 7 people in each of the 4 cabins. its 7x4=28
Answer:

Step-by-step explanation:

Divide both sides by
:

Simplify:

So for A Write all numerators above the least common denominator Add the numbers
7
-
12
The answers is A= C/-13
C= 13A