Find the value of a. Find the value of the marked angles.

There are 2 angles (5a+13) and (2a+70) I tried to make an equation 5a+13+2a+70+180. Right now I'm stuck. Am I on the right track?

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  1. What is the third angle equal to?

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  2. there is no third angle

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  3. Is there a triangle?
    Is the triangle right-angles?
    Do your 2 angles form a straight line?

    There has to be more information here, your question makes no sense otherwise.

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