Answer:
1. -21/32
2. -24
3. -2
4. [tex]\frac{91}{45}[/tex]
Step-by-step explanation:
(1) [tex](\frac{-3}{4})(\frac{7}{8})=-(\frac{3}{4})(\frac{7}{8})[/tex]
[tex]=-(\frac{3*7}{4*8})=-(\frac{21}{32})[/tex]
(2) [tex](\frac{2}{3})(-4)(9)=(\frac{2}{3})(\frac{-4}{1})(\frac{9}{1})[/tex]
=- [tex](\frac{2*4*9}{3*1*1})=-(\frac{72}{3})[/tex]
= -24
(3) [tex](\frac{5}{16})[/tex] (-2) (-4) [tex](\frac{-4}{5})[/tex]
= [tex](\frac{5}{16})(+8)(\frac{-4}{5})[/tex]
= - [tex](\frac{5*8*4}{16*1*5})=(\frac{160}{80})[/tex]
= -2
(4) [tex](2\frac{3}{5})(\frac{7}{9})=(\frac{13}{5})(\frac{7}{9})[/tex]
= [tex](\frac{91}{45})[/tex]
