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a+b=266 c-b=98 159+c=400 c= b= a=

Răspuns :

c-b=98 => c=b+98
c=400-159 
c=241
b+98=241 => b=143
a+143=266
a=123
159+c=400
c=400-159
c=241
c-b=98
241-b=98
-b=98-241
-b=-143
b=143
a+b=266
a+143=266
a=266-143
a=123