`4,8:x=12,8xx0,75`
`4,8:x=9,6`
`x=4,8:9,6`
`x=0,5`
________________________________________________
`16,8xx x=32,4xx5,6`
`16,8xx x=181,44`
`x=181,44:16,8`
`x=10,8`
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