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Sa se afle doua nr. care au suma 1261, stiind ca unul din ele este cu 63 mai mare decat celalalt.

Răspuns :

Fie a,b doua numere natruale
Stiind : a+b=1261
            a=63+b
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a,b=?
Inlocuim in formula : 63+b+b=1261
                                  63+2b=1261
                                    2b=1261-63
                                       2b=1198
                                       b=599
                                         a=599+63
                                           a=662
         Proba : 599+662=1261 (corect)
a+b=1261
a+63=b
a=?
b=?

a+a+63=1261
2a=1261-63
2a=1198
a=1198:2
a=599

b=a+63
b=599+63
b=662