Răspuns :
[10,(6)-20:3]:2,5
Vom scrie totul sub forma de fractii.
10,(6)=[tex]10\frac{6}{9} =\frac{96}{9} =\frac{32}{3}[/tex]
20:3=[tex]\frac{20}{3}[/tex]
2,5=[tex]\frac{25}{10} =\frac{5}{2}[/tex]
[tex](\frac{32}{3}-\frac{20}{3}):\frac{5}{2}\\\\=\frac{12}{3}:\frac{5}{2}\\\\=4*\frac{2}{5}\\\\=\frac{8}{5}[/tex]
[10,(6)-20:3]:2,5=
=[(106-10)/9-20/3]:25/10=
=(96/9-20/3):5/2=
=(32/3-20/3):5/2=
=12/3:5/2=
=4:5/2=
=4×2/5=8/5