Math Problem Statement
Determina un número natural de tres cifras, sabiendo que la suma de sus dígitos es 9, que la diferencia de dicho número con el que se obtiene al intercambiar las cifras de las centenas por el de las unidades es 198, y que si consideramos la suma entre ambos números, es decir, entre el número a determinar y el que se obtiene al intercambiar sus cifras, el resultado es 828
Solution
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Math Problem Analysis
Mathematical Concepts
Algebra
System of Equations
Digit-based Problems
Formulas
Sum of digits equation: a + b + c = 9
Difference equation: (100a + 10b + c) - (100c + 10b + a) = 198
Sum of original and permuted number: (100a + 10b + c) + (100c + 10b + a) = 828
Theorems
Basic Algebraic Manipulation
Systems of Linear Equations
Suitable Grade Level
Grades 9-12
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