Respuesta :

 iscoseles triangle

3x - 5 = 19 - x
4x = 24
x =6

3x - 5 = 3(6) -5 = 13
2x = 2(6) = 12


perimeter of  iscoseles triangle
P = 2a + b
P = 2(13) + 12
P = 26 + 12
P = 38

answer

Perimeter = 38 cm

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