Step-by-step explanation:
As we know that ,
Angles opposite to equal sides are equal .
Using this theorem ,
=> y + 12 = 3x - 5
Also ,
=> 3x - 5 = 5y - 4
from above two ,
=> y + 12 = 5y - 4
=> 4y = 16
=> y = 16/4
=> y = 4
So that ,
=> 3x - 5 = 4 + 12
=> 4x = 16 + 5
=> x = 21/4
=> x = 5.25
