3 years ago

Point E is between points D and F. If DE = x - 4 , EF = 2x + 5 , and DF = 4x- 8 , find x

1 answer:

3 0

You know that
$DE+EF=DF
(x-4) + (2x+5) = (4x-8)
$

combine like terms $3x+1 = 4x-8
1 = x-8
x=9$

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