Ответ:
- 9*(8-9х)=4х+5
-72+81х=4х+5
81х-4х=72+5
77х=77
Х=1
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Ответ:
- 9*(8-9х)=4х+5
-72+81х=4х+5
81х-4х=72+5
77х=77
Х=1