You can put this solution on YOUR website! M is the midpoint between E and F. If EM=3x+9 and MF=x+17, find the length of line segment EF.
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Draw the picture.
You have a line segment with M inbetween E and F.
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EF = EM + MF = 3x+9 + x+17 = 4x+26
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Cheers,
Stan H.