3x + 100 = 500 + 500
3x + 100 = 1 000
3x = 1 000 - 100
3x = 900
x = 900/3
x = 300
Rpta: Cada bolsa de arroz pesa 300 gr
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3x + 100 = 500 + 500
3x + 100 = 1 000
3x = 1 000 - 100
3x = 900
x = 900/3
x = 300
Rpta: Cada bolsa de arroz pesa 300 gr