Does anyone know the answer to the attached?

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.

Common binomial factor of 6x(3x+7)+5(3x+7)