I need answers for these three questions

Using the fact that ∠13 and ∠14 are supplementary angles, we will get:
Notice that the angles ∠13 and ∠14 are supplementary angles, which means that the measures add up to 180°.
Then we should have that:
(4x + 11) + (3x + 1) = 180
Now we need to solve that linear equation for x, we will get:
(4 + 3)*x + (11 + 1) = 180
7x + 12 = 180
7x = 180 - 12 = 168
x = 168/7 = 24
The value of x is 24, and the measures of the angles are:
If you want to learn more about supplementary angles:
https://brainly.com/question/2046046
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