Ответ:
(5х+8)-(8х+14)=9
5х+8-8х-14=9
-3х-6=9
-3х=9+6
-3х=15
х=-5
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Ответ:
(5х+8)-(8х+14)=9
5х+8-8х-14=9
-3х-6=9
-3х=9+6
-3х=15
х=-5