Question 494632
Let x = the base
2(2x - 7) + x = 106
4x -14 + x = 106
5x - 14 = 106
5x = 120
x = 24 cm the base.
48 - 7 
41 cm  One side of the triangle
41 cm + 41 cm  + 24 cm = 106 cm
This does check.
Cleomenius.