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Simplify: 4/((216)^(-2/3))+1/((256)^(-3/...

Simplify: `4/((216)^(-2/3))+1/((256)^(-3/4))+2/((243)^(-1/5))`

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`4/((216)^(-2/3))+1/((256)^(-3/4))+2/((243)^(-1/5))`
`=4 xx (216)^(2/3)+1 xx (256)^(3/4)+2 xx (243)^(1/5)`
`=4 xx 6^2+4^3+3`
`=4 xx 36+64+3`
`=211`
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