" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Valor del pan = x
Valor del pastel = y
5x + 3y = 30 (1)
2x + y = 11 (2) Multiplicamos (-3)
5x + 3y = 30
- 6x - 3y = - 33
----------------------
- x + 0 = - 3
- x = - 3
3 = x Reemplazas este valor en (1)
5x +3y = 30
5(3) + 3y = 30
15 + 3y = 30
3y = 30 - 15
3y = 15
y = 15/3
y = 5
Respuesta,
Cada pan cuesta $ 3 y cada pastel cuesta $ 5