anonymous
  • anonymous
Use the method of substitution to solve the system of linear equations 8x+4y=8/5 y=5x-1
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
plug in the value of Y into the equation, 8x+4y=8/5 instead of 4y you would put in the value of Y like this: 8x+4(5x-1)=8/5 then just solve(: do you get that or you need more help?
anonymous
  • anonymous
Substitution means you can plug in one value of y for another. they made it easy for you by singling out the y, by y=5x-1 Plug y=5x-1 into the other equation, 8x+4(5x-1)=8/5. From there you can single out the value of x, and plug x back in to get y.
anonymous
  • anonymous
okay what i have so far is 28x=9/5 is that right so far?

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anonymous
  • anonymous
I don't understand how you got 28x=9/5 You should make sure to factor out correctly. 4(5x-1)= 20x-4. 20x-4+8x= 28x-4=8/5. 28x= 8/5 +4. From there it should be easy to get the x. After getting x, plug into the original equations(hint, pick the easier one) and voila you got y.
anonymous
  • anonymous
does x =1?
anonymous
  • anonymous
oops i messed that up i think
anonymous
  • anonymous
okay so 28x=8/5+4. so do i combine 8/5 and 4?

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