Answer:
I don't see that picture taht good can you put ir more good??
Answer: solved for x hope this is good enough
Step-by-step explanation: if this is what I think it is
3x + 16 = 7x subtract 3x from each side
16 = 4x
X = 4
So 7x is 28 and all triangles are 180 degrees minus the 90 degrees
