Primero vamos a descomponer polinómicamente los numerales.
2 × 7² + a × 7 + b = 3 × 6² + b × 6 + a
2 × 49 + 7a + b = 3 × 36 + 6b + a
98 + 7a + b = 108 + 6b + a
98 + 7a + b - 108 - 6b - a = 0
6a - 5b - 10 = 0
6a - 5b = 10
↓ ↓
5 + 4 = 9
∴ a + b = 9
Atte.: Miroku24
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Primero vamos a descomponer polinómicamente los numerales.
2 × 7² + a × 7 + b = 3 × 6² + b × 6 + a
2 × 49 + 7a + b = 3 × 36 + 6b + a
98 + 7a + b = 108 + 6b + a
98 + 7a + b - 108 - 6b - a = 0
6a - 5b - 10 = 0
6a - 5b = 10
↓ ↓
5 + 4 = 9
∴ a + b = 9
Atte.: Miroku24