aidanrpink aidanrpink

09-02-2015
Mathematics

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Find a number that is 15 more than 4 times its opposite

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konrad509 konrad509

09-02-2015

x - the number

[tex]x=4\cdot(-x)+15\\ x=-4x+15\\ x+4x=15\\ 5x=15\\ x=3[/tex]

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