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x + x = 150 - 80
x + x = 70
2x = 70
x = 70 : 2
x = 35
Comprobamos:
x + (x+80) = 150
35 + (35+80) = 150
35 + 115 = 150
150= 150
x + (x - 80 ) = 150
x + x = 150 + 80
x + x = 230
2x = 230
x = 230 : 2
x = 115
Comprobamos:
x + (x-80) = 150
115 + (115 - 80) = 150
115 + 35 = 150
150 = 150
Entonces los números son: 35 y 115.
La planta cuesta 115.
La maceta cuesta 35.
La planta cuesta 80 más que la maceta: 115 - 35 = 80
Las dos cuestan 150: 115 + 35 = 150