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ex 3.Gasiti termenul necunoscut:123903+a=438124; c-9736=12378; 81236-b=17589

Răspuns :

123903+a=438124
a=438124-123903
a=314221

c-9736=12378
c=12378+9736
c=22114

81236-b=17589
b=81236-17589
b=63647