Anyone know how to do this??

So triangles add up to 180 degrees

This is a right triangle so the angle with y is automatically 90 degrees

So you have 2 angles already 90 and 70.

90 + 70 = 160

The last angle must add up with the other angles to get 180 degrees

180 - 160 = 20 degrees

X= 20 degrees

Hope this helped ;)

The first answer is correct