Ответ: 6,8-0,6+2,7= 1,3x
6,2+2,7=1,3x
8,9=1,3x
8,9/1,3=x
X=6,85
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Ответ: 6,8-0,6+2,7= 1,3x
6,2+2,7=1,3x
8,9=1,3x
8,9/1,3=x
X=6,85