anonymous
  • anonymous
Find the solution of this system of equations. Seperate the x- and y-values with a comma. x=8+y -2x+6y=-20
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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pooja195
  • pooja195
Use substiotuion :)
pooja195
  • pooja195
\[\huge-2(8+y)+6y=-20\]
Z4K4R1Y4
  • Z4K4R1Y4
solve the first equation for 'y' then substitute into second equation.

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More answers

anonymous
  • anonymous
I'm not good with this stuff at all lol
pooja195
  • pooja195
Distribute first \[\huge −2(8+y)\]
anonymous
  • anonymous
-16 - 2y
pooja195
  • pooja195
good :) \[\huge-16-2y+6y\] combine like terms
anonymous
  • anonymous
-16+4
pooja195
  • pooja195
no
anonymous
  • anonymous
-16+4y*
pooja195
  • pooja195
good \[4y-16=-20\] isolate y
anonymous
  • anonymous
I don't know how to do any of that haha, I'm just finishing a study guide I have so I can pass for the year :/
pooja195
  • pooja195
Well firt step to isolate would be to add the 16 to both sides :) -16+16=0 so it cancels -20+16=?
anonymous
  • anonymous
-4
pooja195
  • pooja195
good now just divide! :) 4y=-4 4/4=1 so you are left with y -4/4=?
anonymous
  • anonymous
-1
anonymous
  • anonymous
so it's 7, -1?
pooja195
  • pooja195
yep :) good job!
pooja195
  • pooja195
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anonymous
  • anonymous
Thanks!

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