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26-11-2015
Mathematics

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Find the value of 21 - 18 3 2. 2 9 18 User: Simplify 9 - {x - (7 + x)}.

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Panoyin Panoyin

27-11-2015

The value of 21 - 18 is 3.

9 - {x - (7 + x)}
9 - {x - 7 - x}
9 - x + 7 + x
9 + 7 - x + x
16

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