1)х/18=7/9
9х=18×7(126)
х=14
2)х/20=2/5
5х=20×2(40)
х=8
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Answers & Comments
1)х/18=7/9
9х=18×7(126)
х=14
2)х/20=2/5
5х=20×2(40)
х=8