1) x + y = 24
y = 24 - x
2) x - y = 14
x = 14 + y
sustituyendo: y = 24 - (14 + y)
y = 24 -14 - y (multiplicando signos)
y = 10 - y
2y = 10
y = 10/2 = 5
sustituyendo en 2
x = 14 + 5 = 19
comprobando:
1) 19 + 5 = 24
2) 19 - 5 = 14
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1) x + y = 24
y = 24 - x
2) x - y = 14
x = 14 + y
sustituyendo: y = 24 - (14 + y)
y = 24 -14 - y (multiplicando signos)
y = 10 - y
2y = 10
y = 10/2 = 5
sustituyendo en 2
x = 14 + 5 = 19
comprobando:
1) 19 + 5 = 24
2) 19 - 5 = 14