Выполни действия 1) \cfrac{a}{8}+\cfrac{a}{12}= . 2) \cfrac{4x}{15}-\cfrac{2x}{9}= . 3) \cfrac{6c}{7a}-\cfrac{3d}{14a}= . 4) \cfrac{m}{a^2b}-\cfrac{n}{ab^3}= . 5) \cfrac{a^{2}}{b^{5}c^{4}}-\cfrac{a^{3}}{b^{3}c^{6}}= . 6) \cfrac{5m}{18a^{7}}+\cfrac{7n}{12a^4}= .

Задание

Выполни действия

\(\cfrac{a}{8}+\cfrac{a}{12}=\) [ ].
\(\cfrac{4x}{15}-\cfrac{2x}{9}=\) [ ].
\(\cfrac{6c}{7a}-\cfrac{3d}{14a}=\) [ ].
\(\cfrac{m}{a^2b}-\cfrac{n}{ab^3}=\) [ ].
\(\cfrac{a^{2}}{b^{5}c^{4}}-\cfrac{a^{3}}{b^{3}c^{6}}=\) [ ].
\(\cfrac{5m}{18a^{7}}+\cfrac{7n}{12a^4}=\) [ ].