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Difference between addition elimination and substitution? - Answers

if you have one equation that gives you x or y use substitution x+3y=18 x= 18-3y substitute (18-3y) for x in the other equation if you have coefficients that will not 'reduce' use elimination 2x+3y= -3 5x-4y=9 watch for equations that will reduce 2x+4y= -8 divide through by 2 x+2y= -4 x= -4-2y



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Difference between addition elimination and substitution? - Answers

https://math.answers.com/other-math/Difference_between_addition_elimination_and_substitution

if you have one equation that gives you x or y use substitution x+3y=18 x= 18-3y substitute (18-3y) for x in the other equation if you have coefficients that will not 'reduce' use elimination 2x+3y= -3 5x-4y=9 watch for equations that will reduce 2x+4y= -8 divide through by 2 x+2y= -4 x= -4-2y



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https://math.answers.com/other-math/Difference_between_addition_elimination_and_substitution

Difference between addition elimination and substitution? - Answers

if you have one equation that gives you x or y use substitution x+3y=18 x= 18-3y substitute (18-3y) for x in the other equation if you have coefficients that will not 'reduce' use elimination 2x+3y= -3 5x-4y=9 watch for equations that will reduce 2x+4y= -8 divide through by 2 x+2y= -4 x= -4-2y

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      if you have one equation that gives you x or y use substitution x+3y=18 x= 18-3y substitute (18-3y) for x in the other equation if you have coefficients that will not 'reduce' use elimination 2x+3y= -3 5x-4y=9 watch for equations that will reduce 2x+4y= -8 divide through by 2 x+2y= -4 x= -4-2y

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