Answer:
xyz = - [tex]\frac{21}{2}[/tex]
Step-by-step explanation:
substitute the given values into the expression
xyz
= [tex]\frac{4}{5}[/tex] × - 15 × [tex]\frac{7}{8}[/tex]
= - 12 × [tex]\frac{7}{8}[/tex]
= - 3 × [tex]\frac{7}{2}[/tex]
= - [tex]\frac{21}{2}[/tex]
