please ans this question
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HEY!!
Step-by-step explanation:
HERE IS THE ANSWER
x:y = 1:3= 1×7 : 3×7 = 7:21
y:z = 7:3= 7×3 : 3×3 = 21:9
So, x:y:z = 7:21:9
HENCE , X:Z = 7:9
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