2x+16=3x-12
16+12=3x-2x
28=x
now,since this is a fig of 2 parallel line with a bisector then line EF =180 degrees.
therefore,3x+12+y=180
3(28)+12+y=180 [we already found the value of x]
96+y=180
y=180-96
y=84.
