In the figure, DE || BC, find x.
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Step-by-step explanation:
by Thales theorem, as DE is parallel to BC
4/(x-4) =8/(3x - 19)
on cross ❌, we get
4(3x - 19) = 8(x - 4)
=> 12x - 76 = 8x - 32
=> 12x - 8x = -32 + 76
=> 4x = 44
=> x = 11
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