5/9 of a piece of metal has a mass of 7 kg. What is the mass of 2/7 of the metal?
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mass of 5/9 piece of metal = 7KG
mass of 1 piece of metal =7÷5/9=7×9/5
mass of 2/7 of metal = 7×9/5×2/7= 3.6kg
mass of 1 piece of metal =7÷5/9=7×9/5
mass of 2/7 of metal = 7×9/5×2/7= 3.6kg
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