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Autumnnelson47 Autumnnelson47
  • 27-05-2014
  • Mathematics
Answered

How do I solve 3x-7=5x+13

Verified Answer :

Lilith
Lilith Lilith
  • 27-05-2014

\(3x-7=5x+13\ \ |+7 \\ \\3x-7+7=5x+13+7\\ \\3x=5x+20 \ \ |(-5x)\\ \\3x-5x=5x-5x+20 \\ \\-2x=20 \ \ / :(-2)\\ \\ x=-\frac{20}{2}\\ \\x= -10\)

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LemonsAreEvil
LemonsAreEvil LemonsAreEvil
  • 27-05-2014

3x-7=5x+13
   -13     -13
___________

3x-20=5x
-3x    -3x
__________

-20 = 2x
-20 divided by 2
x = -10

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