Ответ:
1 5/7х-5/9=2 4/9
1 5/7х=2 4/9+5/9
1 5/7х=3
х=3÷1 5/7
х=1 3/4
----------------------
1 3/4×1 2/5-5/9=2 4/9
2 4/9=2 4/9
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Ответ:
1 5/7х-5/9=2 4/9
1 5/7х=2 4/9+5/9
1 5/7х=3
х=3÷1 5/7
х=1 3/4
----------------------
1 3/4×1 2/5-5/9=2 4/9
2 4/9=2 4/9