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x +y = 450 1
x/y = 8 2 de 2 despejo x
x= 8y la reemplazo en 1
x +y = 450
8y +y = 450
9y = 450
y = 450 /9
y= 50 reemplazo el valor de y en x= 8y
x= 8(50)
x= 400
el número menor es 50