1)х×5 1/3=12 3/5
х=122 3/5-5 1/3
х=47/15
2)х-7 1/7=12 3/5
х=12 3/7
х=144/56
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1)х×5 1/3=12 3/5
х=122 3/5-5 1/3
х=47/15
2)х-7 1/7=12 3/5
х=12 3/7
х=144/56