anonymous
  • anonymous
find the y- coordinate of the point of intersection of the lines -2x-3y=1 5x + 2y =1
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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hartnn
  • hartnn
since we need to find y co-ordinate, lets try to eliminate 'x' do you know the method of elimination?
anonymous
  • anonymous
we eliminate the 2x and the 5x
hartnn
  • hartnn
lets start by multiplying 1st equation by 5 multiply each term of -2x-3y=1 by 5 what do u get?

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anonymous
  • anonymous
-10x-15x=5
hartnn
  • hartnn
good! now multiply each term of 5x+2y=1 by 2 so that you get 10x for this too!
hartnn
  • hartnn
then all you have to do is just add the 2 new equations :)
anonymous
  • anonymous
10x -5y=10
hartnn
  • hartnn
did you multiply each term by 2?
hartnn
  • hartnn
5x+2y =1 2*5x + 2*2y = 2*1 ....
anonymous
  • anonymous
ooops! -7/11
hartnn
  • hartnn
correct :)

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