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Which rational number must be added to3\7to get -3\4 ?

Which rational number must be added to3\7to get -3\4 ?
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Which rational number must be added to3\7to get -3\4 ?

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User Sophie Coyne
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1 Answer

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(3)/(7)+x=-(3)/(4)\\\\(3)/(7)((4)/(4))+x=-(3)/(4)((7)/(7))\\\\(12)/(28)+x=-(21)/(28)\\\\x=-(21)/(28)-(12)/(28)\\\\x=-(33)/(28)=1\ (5)/(28)
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User Yonatan Naor
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