if 4/x+7/y = 18 and 2/x-7y = 6 , then what is the value of 1/x+1/y ?
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Mention any two mathod of mushroom harvesting
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Mention any two mathod of mushroom harvesting Mention any two mathod of mushroom harvestingMention any two mathod of mushroom harvestingMention any two mathod of mushroom harvestingMention any two mathod of mushroom harvesting
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