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24 January, 20:04

P=s1+s2+s3 solve for s3

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  1. 24 January, 22:34
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    P=s1+s2+s3

    Move + s1 to the other side. Sign changes from + s1 to - s1

    P-s1=s1-s1+s2+s3

    p-s1=s2+s3

    Move s2 to the other side. Sign changes from s2 to - s2

    p-s1-s2=s2-s2+s3

    p-s1-s2=s3

    Answer: p-s1-s2=s3
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