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Mathematics

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Find the value of x and then find EF if E is the midpoint of line segment DF.

DE = 15 - 3x

EF = x + 3

Answer :

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Answer:

EF=6

Step-by-step explanation:

E is the midpoint, so DE = EF

DE = 15-3x

EF = x+ 3

Since DE = EF,

15 - 3x = x + 3

-4x = -12

x = 3

If x = 3,

DE = 15 - 3*3, 15 - 9 = 6

EF = x+ 3, so EF = 3 + 3 = 6

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