Х+1 2/7Х=12 4/7
2 2/7Х=12 4/7
16/7Х=88/7
Х=88/7:16/7=88/7 х 7/16
Х=88/16
Х=5 1/2
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Х+1 2/7Х=12 4/7
2 2/7Х=12 4/7
16/7Х=88/7
Х=88/7:16/7=88/7 х 7/16
Х=88/16
Х=5 1/2