5\14 + (-11\21) срочно нужно

[latex] \frac{5}{14} - \frac{11}{21} = \frac{15-22}{42} = -\frac{7}{42} = -\frac{1}{6} [/latex]

[latex] \frac{5}{14} +(- \frac{11}{21} )=\frac{5}{14} - \frac{11}{21} =\frac{15}{42} - \frac{22}{42} =- \frac{7}{42} =- \frac{1}{6} \\ [/latex]