Respuesta :

Here, EF = 1/2(AB + CD)
4x+3 = 1/2 (x+8 + 180)
2(4x + 3) = x + 188
8x + 6 = x + 188
8x - x = 188 - 6
7x = 182
x = 182/7
x = 26

In short, Your Answer would be 26

Hope this helps!