Answer:
x = 8 and YZ = 16
Explanation:
since Y is between X and Z , then
XY + YZ = XZ , that is
12 + 2x = 28 ( subtract 12 from both sides )
2x = 16 ( divide both sides by 2 )
x = 8
and YZ = 2x = 2 × 8 = 16
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