Ответ:
(x-87)*14=106
14x-1218=106
14x=106+1218
14x=1325
X=1325:14
662
X=------------
7
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Ответ:
(x-87)*14=106
14x-1218=106
14x=106+1218
14x=1325
X=1325:14
662
X=------------
7