vicentecordoba1206 vicentecordoba1206
  • 11-09-2020
  • Mathematics
contestada

La suma de dos numeros es 208 y su diferencia es 122¿cuales son los numeros?

Respuesta :

zarampa
zarampa zarampa
  • 12-09-2020

Answer:

Los números son:

43 y 165

Step-by-step explanation:

Planteamiento:

a + b = 208

a - b = 122

Desarrollo:

de la segunda ecuación del planteamiento:

a = 122 + b

sustituyendo este último valor en la primer ecuación del planteamiento:

(122+b) + b = 208

2b = 208 - 122

2b = 86

b = 86/2

b = 43

a = 122 + b

a = 122 + 43

a = 165

Comprobación:

165 + 43 = 208

165 - 43 = 122

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