Answered

ab ve ba iki basamaklı doğal sayılardır. ab+ba=66 olduğuna göre a+b taplamı kaçdır A)2 B)3 C)4 D)5 E)6

Sagot :

ab=10a+b

ba=10b+a

 

toplarsak 10a+b+10b+a=11a+11b  11 parantezine alalım

 

11(a+b)=66

 

ise a+b=6

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