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Dianagrozavu1
a fost răspuns

Cakculati :
a+b-c si a-b+c,stiind ca a=1957+234 b=1989-43 c=22+147
dau coronita

Răspuns :

Flavistin
a=1957+234
a=2191
b=1989-43
b=1946
c=22+147
c=169
a+b-c=2191+1946-169=3986
a-b+c=2191-1946+169=414
Iulica1
[tex]a=1957+234=2191 \\ b=1989-43=1946 \\ c=22+147=169 \\ a+b-c=3968\\ a-b+c=414[/tex]