номер 96 гдз 8 класс алгебра Муравин Муравин

1)\begin{equation}\frac{1}{4ab^{2}}-\frac{1}{21a^{2}b}+\frac{2}{14a^{3}} \end{equation} \begin{equation}\frac{21a^{2}-4ab+12b^{2}}{84a^{3}b^{2}} \end{equation} 2)\begin{equation}\frac{2}{33a^{2}b}-\frac{3}{55ab^{2}}-\frac{5}{44b^{3}} \end{equation} \begin{equation}\frac{40b^{2}-36ab-75a^{2}}{660b^{3}a^{2}} \end{equation} 3)\begin{equation}\frac{2a+1}{4a^{5}}+\frac{a^{2}-2}{a^{4}}-\frac{1}{a^{2}} \end{equation} \begin{equation}\frac{2a+1+4a^{3}-8a-4a^{3}}{4a^{5}}= \end{equation} \begin{equation}=\frac{1-6a}{4a^{5}} \end{equation} 4)\begin{equation}\frac{1-5b^{2}}{b^{6}}-\frac{b-5}{b^{4}}+\frac{1}{b^{3}} \end{equation} \begin{equation}\frac{1-5b^{2}-b^{3}-5b^{2}+b^{3}}{b^{6}}= \end{equation} \begin{equation}=\frac{1-10b^{2}}{b^{6}} \end{equation}
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