احسب العبارات التالية :
\( b=\dfrac{7}{3}-\dfrac{15}{4}\times\left(-\dfrac{6}{5}\right) \) \( a=-4\times\dfrac{5}{3}\times\dfrac{-9}{25} \) \( d=\dfrac{3}{2}-\dfrac{1}{2}\times\dfrac{-5}{7} \) \( c=-\dfrac{6}{985}\times\left(\dfrac{-985}{9}+\dfrac{985}{4}\right) \)
\( f=0{,}5\times\left(-\dfrac{4}{3}\right)+\dfrac{2}{9}\times(-2{,}4) \) \( e=0{,}5\times\left(-\dfrac{784}{599}\right)-\dfrac{1}{2}\times\left(-\dfrac{784}{599}\right) \) \( h=-\dfrac{6}{743}\times\left|\dfrac{-743}{9}+\dfrac{743}{4}\right| \) \( g=-\dfrac{3}{4}\times\left|1-\dfrac{1}{2}\times 3\right| \)
المرحلة 1: احسب الأقواس والقيم المطلقة.
المرحلة 2: أجرِ الجداءات.
المرحلة 3: أجرِ الجمع/الطرح واختزل.
\( b=\dfrac{7}{3}+\dfrac{9}{2}=\dfrac{41}{6} \) ✓ \( a=\dfrac{4\times5\times9}{3\times25}=\dfrac{12}{5} \) ✓ \( d=\dfrac{3}{2}+\dfrac{5}{14}=\dfrac{13}{7} \) ✓
\( c=-6\left(-\dfrac{1}{9}+\dfrac{1}{4}\right)=-6\times\dfrac{5}{36}=-\dfrac{5}{6} \) ✓
\( f=-\dfrac{2}{3}-\dfrac{8}{15}=-\dfrac{6}{5} \) ✓ \( e=\left(\dfrac{1}{2}-\dfrac{1}{2}\right)\times\left(-\dfrac{784}{599}\right)=0 \) ✓
\( h=-\dfrac{6}{743}\times\dfrac{3715}{36}=-\dfrac{5}{6} \) ✓ \( g=-\dfrac{3}{4}\times\left|-\dfrac{1}{2}\right|=-\dfrac{3}{8} \) ✓