Question

5ab/(5ab-8a*) при а=3,b=8

Answer 1

$frac{5ab}{5ab-8a}=frac{5ab}{a(5b-8)}=frac{5b}{5b-8}\\frac{5*8}{5*8-8}=frac{40}{40-8}=frac{40}{32}=1,25$