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Anonymous Anonymous
  • 24-01-2015
  • Mathematics
Answered

explain why x+8=12 and 12-x=8 have the same solution ?

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Anonymous Anonymous
  • 24-01-2015

\(x+8=12\ \ \ \ |subtract\ "x"\ from\ both\ sides\\\\8=12-x\Rightarrow 12-x=8\\\\ Those\ equations\ are\ equivalent\ (They\ have\ the\ same\ solution\ x=4)\)

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Lysielulu Lysielulu
  • 24-01-2015

because the equations are equivalent, either way you solve them, you will have the same outcome

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