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calculati:a+b-c si a-b+c,stiind ca :a=1957+234; C=22+147. REPEDE VA ROG

Răspuns :

Rezolvare:
a=1957+234=2191;
a=2191;
c=22+147=169
c=169;
b=a-c
b=2191-169
b=2022;
a+b-c=2191+2022-169=4044
a-b+c=2191-2022+169=338 .