115° Вправа 115Алгебра 8 клас Тарасенкова 2025 · § 3 · стор. 38

115. Зведіть дріб 1/x до знаменника:

1) ${\displaystyle \frac{1^{\mathrm{\setminus }3}}{x}=}$${\displaystyle \frac{1\cdot 3}{x\cdot 3}=}$${\displaystyle \frac{3}{3x}}$;

2) ${\displaystyle \frac{1^{\mathrm{\setminus }5}}{x}=}$${\displaystyle \frac{1\cdot 5}{x\cdot 5}=}$${\displaystyle \frac{5}{5x}}$;

3) ${\displaystyle \frac{1^{\mathrm{\setminus }x}}{x}=}$${\displaystyle \frac{1\cdot x}{x\cdot x}=}$${\displaystyle \frac{x}{x^2}}$;

4) ${\displaystyle \frac{1^{\mathrm{\setminus }2x}}{x}=}$${\displaystyle \frac{1\cdot 2x}{x\cdot 2x}=}$${\displaystyle \frac{2x}{2x^2}}$;

5) ${\displaystyle \frac{1^{\mathrm{\setminus }5x^2}}{x}=}$${\displaystyle \frac{1\cdot 5x^2}{x\cdot 5x^2}=}$${\displaystyle \frac{5x^2}{5x^3}}$;

6) ${\displaystyle \frac{1^{\mathrm{\setminus }6x^3}}{x}=}$${\displaystyle \frac{1\cdot 6x^3}{x\cdot 6x^3}=}$${\displaystyle \frac{6x^3}{6x^4}}$.