September 2021 1 31 Report
Выполните действия: Прошу вас срочно

а) (x+3)/2-(x-5)/2

б) 3/x+(x-4)/(x+3)

в) (3a-3b)/(3a^2 )∙a^4/(a^2-b^2 )

г) (m^2-9)/n:(m^2-6m+9)/(5n^2 )
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