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Question
Simplify:
`(1/2-1/3)(3/4-4/5)÷(1/2-2/5+1/7)`
Sum
Solution
`(1/2-1/3)(3/4-4/5)÷(1/2-2/5+1/7)`
`=((3-2)/6)((15-16)/20)÷((35-28+10)/70)`
`=(1/6)((-1)/20)÷(17/20)=1/6xx(-1)/20÷17/70`
= `1/6xx(-1)/20xx70/17=-7/204`
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