Answer:
38
Step-by-step explanation:
because the angles are congruent you 3x-5 and 19-x are equal to each other, so solve for x using these equations:
3x-5 = 19-x
+5 +5
3x = 24 - x
+x +x
4x = 24
/4 /4
x = 6
Insert x into each equation and add all the answer together to get the perimeter:
3(6)-5 = 13
19-6 = 13
2(6) = 12
13+13+12 = 38
