aidanrpink aidanrpink
  • 09-02-2015
  • Mathematics
Answered

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



Answer :

konrad509
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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