Respuesta :

Answer: 5

Step-by-step explanation:

The length of the midsegment is one-half the length of the base.  So,

Base = 2(midsegment)

7x + 1 = 2(4x - 2)

7x + 1 = 8x - 4

       1 =  x - 4

       5 = x


Do 7 plus 1 then do 4 time 2 then subtract the two answers and u have 0 which is x
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