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daca a+b=203,b+c=185,atunci a+2b+c =

Răspuns :

a+b=203
b+c=185

a+b+b+c=203+185
a+2b+c =388

a+b=203

b+c=185

a+b+b+c=203+185

a+2b+c =388 spor la treaba