\(2,\dfrac{-30}{17}:\dfrac{-15}{-34}\)
\(=\dfrac{-30}{17}:\dfrac{15}{34}\)
\(=\dfrac{-30}{17}.\dfrac{34}{15}\)
\(=\dfrac{\left(-2\right).2}{1.1}\)
\(=-4\)
\(3,\dfrac{-13}{-14}:\dfrac{-26}{7}\)
\(=\dfrac{13}{14}.\dfrac{-7}{26}\)
\(=\dfrac{1.\left(-1\right)}{2.2}\)
\(=\dfrac{-1}{4}\)
\(4,-18:\dfrac{6}{58}\)
\(=-18:\dfrac{3}{29}\)
\(=-18.\dfrac{29}{3}\)
\(=\dfrac{\left(-6\right).29}{1.1}\)
\(=-174\)
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