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    https://gyazo.com/32e5b6f6dc88bdcc3abb72d0564a1a3d

    Could someone please explain each step of the solution?

    What I mainly don't get is the first part of the solution:-

    https://gyazo.com/dad357c545894f7d09421a75729e9c25
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    (Original post by Kraixo)
    https://gyazo.com/32e5b6f6dc88bdcc3abb72d0564a1a3d

    Could someone please explain each step of the solution?

    What I mainly don't get is the first part of the solution:-

    https://gyazo.com/dad357c545894f7d09421a75729e9c25
    http://www.thestudentroom.co.uk/forumdisplay.php?f=38
 
 
 
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Updated: November 5, 2015
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The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

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