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hjfffdfhfk's avatar

Could you explain this simple maths problem?

Asked by hjfffdfhfk (3points) June 27th, 2009

http://www.bbc.co.uk/schools/gcsebitesize/maths/images/figure_3.gif
I need to work out PS, could you show me what to do and explain why you did what you did on each step?

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