Arecord album is 3/16 of an inch thick. how many albums can be stacked to fit in a box 12 inches high? show me how you got you answer explain

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

7

step-by-step explanation:

the answer would be 7