lilkyky67, this is the solution:
Let's recall that the angles in the image are consecutive interior angles and they add up to 180 degrees.
Therefore,
12x - 29 + 4x + 1 = 180
16x - 28 = 180
Adding 28 at both sides:
16x - 28 + 28 = 180 + 28
16x = 208
Dividing by 16 at both sides:
16x/16 = 208/16
x = 13
Now, we can find out the measures of the two angles, as follows:
First angle:
12x - 29 = 12 * 13 - 29
156 - 29 = 127
Second angle: