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📝 تمارين — مختلط — الصفحة 10 من 10
\( -\dfrac{3}{8}\div1.75 =-\dfrac{3}{8}\div\dfrac{7}{4}=-\dfrac{3}{8}\times\dfrac{4}{7}=-\dfrac{3}{14} \)
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النوع 7 — عدد عشري\( -\dfrac{3}{8}\div1.75 = ? \)
\( \left(-\dfrac{2}{6}+-\dfrac{4}{7}\right)\div\left(3--\dfrac{1}{2}\right) =\left(-\dfrac{19}{21}\right)\div\left(\dfrac{7}{2}\right)=-\dfrac{19}{21}\times\dfrac{2}{7}=-\dfrac{38}{147} \)
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النوع 2 — كسر مركّب (+÷−)\( \left(-\dfrac{2}{6}+-\dfrac{4}{7}\right)\div\left(3--\dfrac{1}{2}\right) = ? \)
\( \left(-\dfrac{1}{2}\times-\dfrac{3}{4}\right)\div\left(-\dfrac{3}{7}--\dfrac{2}{3}\right) =\left(\dfrac{3}{8}\right)\div\left(\dfrac{5}{21}\right)=\dfrac{3}{8}\times\dfrac{21}{5}=\dfrac{63}{40} \)
">النوع 1 — كسر مركّب (×÷−)\( \left(-\dfrac{1}{2}\times-\dfrac{3}{4}\right)\div\left(-\dfrac{3}{7}--\dfrac{2}{3}\right) = ? \)
\( \left(-\dfrac{1}{6}\times-\dfrac{6}{7}\right)\div\left(\dfrac{4}{5}--\dfrac{6}{7}\right) =\left(\dfrac{1}{7}\right)\div\left(\dfrac{58}{35}\right)=\dfrac{1}{7}\times\dfrac{35}{58}=\dfrac{5}{58} \)
">النوع 1 — كسر مركّب (×÷−)\( \left(-\dfrac{1}{6}\times-\dfrac{6}{7}\right)\div\left(\dfrac{4}{5}--\dfrac{6}{7}\right) = ? \)
\( \left(-\dfrac{1}{2}\times-\dfrac{2}{4}\right)\div\left(-\dfrac{4}{8}--\dfrac{2}{8}\right) =\left(\dfrac{1}{4}\right)\div\left(-\dfrac{1}{4}\right)=\dfrac{1}{4}\times-\dfrac{4}{1}=-\dfrac{1}{1} \)
">النوع 1 — كسر مركّب (×÷−)\( \left(-\dfrac{1}{2}\times-\dfrac{2}{4}\right)\div\left(-\dfrac{4}{8}--\dfrac{2}{8}\right) = ? \)
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