anonymous
  • anonymous
Solve by the substitution method 15x-20y=-1 15y=1+10x
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
Minus the 10x to the other side 15x-20y=-1 -10x+15y=1
anonymous
  • anonymous
Then you will have to get rid of one of the variables so get rid of the x then 2(15x-20y=-1) 3(-10x+15y=1 So it will be 30x-40y=-2 -30x+45y=3 = 5y=1
anonymous
  • anonymous
Then you will end up as a fraction y=1/5 Plug it into one of the equations -10x+15(1/5)=1

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anonymous
  • anonymous
Then you will end up with -10x=-2 x=2/10 which can be simplified x=1/5 & y=1/5
anonymous
  • anonymous
Let me check the answers...
anonymous
  • anonymous
Yes it is correct
anonymous
  • anonymous
Hello...
anonymous
  • anonymous
Thanx

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