РЕШИТЕ УРАВНЕНИЯ!СРОЧНО 20 БАЛЛОВ!


1)6(5Х-1)=6Х-7

2)0.5(Х+3)=0.8(10-Х)

3)13-5(Х+8)=45

4)1\2Х + 1\6Х + 5 =Х ( это с решением !!)

\-дробная черта
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