$69
$50 divided by 4= 12.50
12.30 divided by 2= 6.50
12.50 times 5 + 6.50 = $69
Add 3y and 4y: 7y=56
Divide by 7: y=8
Answer:

Step-by-step explanation:
The sum of the interior angles of a triangle add up to
. Therefore, an equiangular triangle will have each of its angles equal to
. We can then set up the following equation:
.