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Question
Evaluate:
`[(1/4)^-3-(1/3)^-3]÷(1/6)^-3`
Solution
`[(1/4)^-3-(1/3)^-3]÷(1/6)^-3`
=`[(4/1)^3-(3/1)^3]÷(6/1)^3`
=`(4/1xx4/1xx4/1-3/1xx3/1xx3/1)÷(6/1)^3`
=`64-27xx(1/6xx1/6xx1/6)`
=`37xx1/216=37/216`
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