64*43,27-64*31,27=..................... 204*31,18+204*11,82=

Răspuns :

2769,28-2001,28=768
6360,72+2411,28=8772
64×43,27-64×31,27=64(43,27-31,27)=64×12=768
204×31,18+204×11,82=204(31,18+11,82)=204×43=8772