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If line QP is a midsegment of triangle MNO, find x

If line QP is a midsegment of triangle MNO, find x-example-1
User Xiaoting
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Since\ MP=PN,\ MP=9 \\ \\ \\ \\ MN=9+9=18 \\ \\ { (3x)/(7x-3) }={ (9)/(18) } \\ \\ 18(3x)=9(7x-3) \\ \\ 54x=63x-27 \\ \\ 9x=27 \\ \\ x=3
User Fulaphex
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