Question

с + 6/7 = 2

решить уранение

Answer 1

с + 6/7 = 2
с=2-6/7
с=1 7/7 - 6/7
с=1 1/7

Answer 2

с+6/7=2
с=2/1-6/7
с=14/7-6/7
с=8/7=1 1/7
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1 1/7+6/7=2