anonymous
  • anonymous
Need more help...If 2x-5y=8 and 7x+6y=17, then 9x+y=
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
from eq 1 x =(8 + 5y)/2 from eq 2 x = (17-6y)/7
radar
  • radar
Use substitution. Equation1 2x-5y=8 Solve for x, 2x=8+5y, then x=4+(5/2)y Equation 2, 7x=6y=17, substitute the newly found x expression like this; 7(4+(5/2)y)+6y=17 this becomes 28+35/2y+6y=17 consolidating similar terms 47y/2=-11 now solve for y
anonymous
  • anonymous
I'm guessing 25

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radar
  • radar
After determing y substitute that value for y int equation 1 and solve for x. then solve the 3rd equation
anonymous
  • anonymous
You can add the two equations. It works out well
amistre64
  • amistre64
now lokis a superhero too ;)
anonymous
  • anonymous
How?
anonymous
  • anonymous
Who pipped me over?
amistre64
  • amistre64
easy, I fanned you lol
anonymous
  • anonymous
Oh...thank you ;)
amistre64
  • amistre64
been waiting a long time to do that lol ;)
anonymous
  • anonymous
I reciprocated.
anonymous
  • anonymous
I prefer the pink of hero...but not complaining.
anonymous
  • anonymous
amistre64
  • amistre64
i here at500 we get to be villians lol
amistre64
  • amistre64
megamind would be an awesome title ;)
anonymous
  • anonymous
I know others answered this question, but I wrote out a solution while you were doing so, and didn't want to waste it :)
anonymous
  • anonymous
I dunno...I wish they'd turn the fan thing off half the time.
anonymous
  • anonymous
I think it's much easier just to add the two equations, since they sum up to: 9x+y=25
anonymous
  • anonymous
rofl, yes!
amistre64
  • amistre64
tag!!

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