a) 5. ( -1/2 ) – 3/4 b) -4 1/5 + 7 2/3 – 2 1/5

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1. a) 5. ( -1/2 ) – 3/4

   =-5/2-3/4

   =-10/4-3/4

   =-13/4

   b) -4 1/5 + 7 2/3 – 2 1/5

   =-21/5+ 23/3-11/5

   = -21/5-11/5+23/3

   = -32/5+23/3

   = -96/15+ 115/15

   = 19/15

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2. a, 

   $5.\frac{-1}{2}-\frac{3}{4}$

   $=\frac{-5}{2}-\frac{3}{4}$

   $=\frac{-10}{4}-\frac{3}{4}$

   $=-\frac{13}{4}$

   b,

   $-4\frac{1}{5}+7\frac{2}{3}-2\frac{1}{5}$

   $=\frac{-21}{5}+\frac{23}{3}-\frac{11}{5}$

   $=\frac{-32}{5}+\frac{23}{3}$

   $=\frac{19}{15}$

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