Ответ:
13/14х+2/14х=15/14х= 1 1/14х
1 3/42-8/42=51/42-8/42= 43/42= 1 1/42х
1 1/42х=2 1/3
х= 2 1/3:1 1/42= 2 14/42:1 1/42= 98/42* 42/43=98/43=2 12/43
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Ответ:
13/14х+2/14х=15/14х= 1 1/14х
1 3/42-8/42=51/42-8/42= 43/42= 1 1/42х
1 1/42х=2 1/3
х= 2 1/3:1 1/42= 2 14/42:1 1/42= 98/42* 42/43=98/43=2 12/43