what is the value of x when the triangle is 90 degrees and the y value is 79 degress
If the right angle = 2x, then x = 45 degrees.
left acute angle = x = 45 degs
That makes the sum of the angles
90 + 45 + 51 = 186 degrees
That won't work.
The triangle goes as
right angle = 2x
top acute angle of triangle = 51
left acute angle = x