simplify [(1/2)^-3-(1/2)^-3]÷(1/4)-3
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Step-by-step explanation:
[(1/2)^3-3-(1/2)^-3]÷(1/4)-3
=[(1/2)^3-3-(2)^3]÷(1/4)-3
=[1/8-3-8]÷1/4-3×4/4
=[1/8-11]÷(-11/4)
=[1-88/8]÷(-11/4)
=(-87/8)÷(-11/4)
=(-87/8×4/11)
=-87/22
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