We know that
• ZA and ZB are supplementary angles: This means their sum is equal to 180°.
Using the given information, we can express the following

Replacing the given expressions, we have

First, we reduce like terms

Now, we subtract 44 on each side-

Then, we divide the equation by 8

We use this value to find the measure of angle ZB

Therefore, the measure of angle ZB is 70°