Question

if x:y is 2:7 and z = 9:11 find x:y:z

Answer 1

Answer:

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Answer 2

Answer:

x=2/7

z=9/11

x=2/7y

z=9/11y

x:y:z

2/7y:y:9/11y

2/7:1:9/11

2×63/7:63;11×63/9

18:63:77

y=63/77

y=9/11