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29-10-2015
Mathematics

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PLEASE Answer!!!! What is 14-x=21 what does x equal.

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29-10-2015

[tex]14-x=21\ \ \ |subtract\ 14\ from\ both\ sides\\\\-x=7\ \ \ |change\ signs\\\\\boxed{x=-7}[/tex]

[tex]check:\\\\L_s=14-(-7)=`14+7=21=R_s[/tex]

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