Answer :

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Answer:

x= 10

YZ=60

Step-by-step explanation:

X____Y____Z

XZ= XY+YZ

81 = (2x+1) + 6x

81 = 8x +1

8x = 81 -1

8x =80

x = 80/8

x = 10

YZ = 6x = 6(10) = 60

I hope I helped you^_^

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