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rezolva exercitiile : 25 x100-4x100+3x19, (80;10)+(1927-1900):3+2

Răspuns :

25 x100-4x100+3x19=
2500-400+57=
2100+57=
2157

(80:10)+(1927-1900):3+2=
8+27:3+2=
8+9+2=
17+2=
19