Please help me with this geometry question. It’s over similar triangles all you have to do is sent up the other half of the problem. I’ll mark you brainiest if it’s correct and you help.

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