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guillermo = 2400-x 2400-x +500
x-500 = 2900-x
x+x = 2900+500
2x = 3400
x = 3400/2
x = 1700 soles
arturo tiene 1700 soles
guillerm0 = 2400 -1700 = 700 soles
comprobacion
x- 500 = 2900 -x
1700 -500 = 2900-1700
1200 = 1200
y guille
x+y=2400
y+500=x
y+500+y=2400
2y=2400-500
2y=1900
y=1900/2=950
tendra cada uno 950 soles
antes de darle 500 soles tendra arturo 1450 soles