How to do this? ? p has to be parallel to q right?

Sorry my answer was wrong, not very good at geometry x=1/3

You can just equal them together to find the value of x. This is due to a theorem that states that if two interior angles are congruent, then the lines are parallel. 

6x=3x+1
-3x -3x                *Put the constants and variables on different sides*

3x=1
---  ---                 *Divide by the number with the variable to isolate it*
3    3

x= 1/3

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