الف) $\left( (-5/8) - (-3/5) + 2/5 \right) \times 4/5 = $

ب) $\left[ (-4/5) \div (-8/10) \right] = $

ج) $\left( (-5/6) \div (-10/8) \right) = $

د) $\left( (-4/5) \div 2/5 \right) = $

هـ) $\left( (-3/5) \div 4/5 \right) = $

و) $\left( (-4/5) \div (-2/3) \right) = $

ز) $\left( 3/14 \times 7/9 \right) + 4/15 = $

ح) $\left( (-2/3) \div (-4/7) \right) + (-2/3) = $

ط) $\left[ (-3/5) \times 2/3 \right] + (-4/5) = $

ی) $\left[ (-4/5) \div (-2/5) \right] + (-5/8) = $