This triangle has 2 equal sides, meaning it is an isosceles.
We know that in an isosceles the two opposite angles (at the bottom) are equal.
So that means the opposite angle to 68 degrees, is also 68 degrees.
We also know that in any triangle all the angles add up to 180 degrees.
So that means
x + 68 + 68 = 180
And solve for x. (By making x by itself)
x = 44 degrees
