Question

2,6xy-2,(3)xy+1,(6)xy+(2,3xy-0,9xy)

Rezolvarea calcului este ?

Answer 1

2,(3)=(23-2)/9=21/9=7/3
1,(6)=(16-1)/9=15/9=5/3
2,6xy-2,(3)xy+1,(6)xy+(2,3xy-0,9xy)=
=2,6xy-7xy/3+5xy/3+1,4xy=
=4xy-2xy/3=
=(12xy-2xy)/3=
=10xy/3