\[\boxed{\text{83\ (83).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
Пояснение.
Решение.
\[\mathbf{Знаменатель\ целых\ чисел\ }\]
\[\mathbf{равен\ 1.}\]
\[\textbf{а)}\ x^{\backslash 8} - \frac{x - y^{\backslash 4}}{2} + \frac{x + y^{\backslash 2}}{4} = \ \]
\[= \frac{4x - 2x + 2y + x + y}{4}\ \ =\]
\[= \frac{3x + 3y}{4}\]
\[\textbf{б)}\ \frac{3}{x} - 2^{\backslash x} - \frac{5}{x} = \frac{3}{x} - \frac{2 \cdot x}{x} - \frac{5}{x} =\]
\[= \frac{3 - 2x - 5}{x} = \frac{- 2x - 2}{x}\]
\[\textbf{в)}\ 3^{\backslash 12} - \frac{2x - y^{\backslash 3}}{4} + \frac{x + 4y}{12} =\]
\[= \frac{36 - 6x + 3y + x + 4y}{12} =\]
\[= \frac{36 - 5x + 7y}{12}\]
\[\textbf{г)}\ \frac{6a - 4b^{\backslash 3}}{5} - \frac{b + 7a^{\backslash 5}}{3} - 2^{\backslash 15} =\]
\[= \ \frac{18a - 12b - 5b - 35a - 30}{15} =\]
\[= \frac{- 17a - 17b - 30}{15} =\]
\[= - \frac{17a + 17b + 30}{15}\]
\[\boxed{\text{83.\ }\text{еуроки}\text{-}\text{ответы}\text{\ }\text{на}\text{\ }\text{пятёрку}}\]
Пояснение.
Решение.
\[\mathbf{Знаменатель\ целых\ чисел\ }\]
\[\mathbf{равен\ 1.}\]
\[\textbf{а)}\ 5^{\backslash 2} - \frac{с}{2} = \frac{10 - с}{2}\]
\[\textbf{б)}\ 5{y^{2}}^{\backslash 3} - \frac{15y^{2} - 1}{3} =\]
\[= \frac{15y^{2} - 15y^{2} + 1}{3} = \frac{1}{3}\]
\[\textbf{в)}\ a + b - \frac{a - 3}{3} =\]
\[= (a + b)^{\backslash 3} - \frac{a - 3}{3} =\]
\[= \frac{3a + 3b - a + 3}{3} =\]
\[= \frac{2a + 3b + 3}{3}\]
\[\textbf{г)}\ \frac{2b^{2} - 1}{b} - b + 5 =\]
\[= \ \frac{2b^{2} - 1}{b} - (b - 5)^{\backslash b} =\]
\[= \frac{2b^{2} - 1 - b^{2} + 5b}{b} =\]
\[= \frac{b^{2} + 5b - 1}{b}\]