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Determinati numerele de forma ab , stiind ca ab1 + 2ab. +ab0=684

Răspuns :


ab1+2ab+ab0=684

1+b+0=4

1+b=4

b=3

a31+2a3+a30=684

3+a+3=8

6+a=8

a=2

231+223+230=684

ab=23

ab1+
2ab+
ab0=
684

4-0-1=3, deci b=3

a31+
2a3+
a30=
684

8-3-3=2, deci a=2
si inlocuim

231+
223+
230=
684