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Segundo número = n
m + n = 100
2m = 3n
m + n = 100
2m - 3n = 0
Despejo m en 1
m + n = 100
m = 100 - n
Sustituyo m en 2
2m - 3n = 0
2 (100 - n) - 3n = 0
200 - 2n - 3n = 0
- 2n - 3n = - 200
- 5n = - 200
n = - 200/-5
n = 40
El valor de n sustituyo en el despeje de m
m = 100 - n
m = 100 - 40
m = 60
Solución : Los números son : 40 y 60