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In any triangle, the three sides always add up to 180. So whether you are given values or just unknown variables, sum up all the angles and make them all equal to 180.
Take number 1 for example
The angles are 3q, q and q. That means
3q + q + q = 180
5q = 180
Divide both sides of the equation by 5
5q/5 = 180/5
q = 36
That means twoof the angles measure 36 degrees each, and the third one measures,
3q = 3(36)
3q = 108
Therefore the angles in number 1 are
36, 36, and 108
Take number 2 also