anonymous
  • anonymous
-6x+5y=-2 10x+5y=30 Elimination
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Steps Only Needed
pooja195
  • pooja195
10 (-6x+5y=-2) 6 (10x+5y=3) Distribute I did this because we need to get the x's to cancel so this way a postive and a negative value of the same number will cancel out x
pooja195
  • pooja195
|dw:1439781385417:dw|

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anonymous
  • anonymous
ok
pooja195
  • pooja195
|dw:1439781428541:dw|
anonymous
  • anonymous
I Dont Do The Steps Thats Why I Need Them
pooja195
  • pooja195
These are the steps im not giving you the answers.
anonymous
  • anonymous
Oh Ok
pooja195
  • pooja195
\[\Huge~\rm~ \begin{bmatrix}-6x+5y=-2 \\10x+5y=30\end{bmatrix} \] \[\Huge~\rm~\begin{bmatrix}-30x+25y=-10 \\30x+15y=90\end{bmatrix} \]
pooja195
  • pooja195
^thats what you get after you distribute
pooja195
  • pooja195
The x's cancel out \[\Huge~\rm~\begin{bmatrix}25y=-10 \\15y=90\end{bmatrix}\]
pooja195
  • pooja195
add the numbers 25+15= ? -10+90=?
anonymous
  • anonymous
40
anonymous
  • anonymous
and
anonymous
  • anonymous
80
pooja195
  • pooja195
40y=80 We need to divide both sides because we want to isolate x 40/40=1 therefore y =1 so just y whats 80/40?
anonymous
  • anonymous
2
pooja195
  • pooja195
Therefore y=2 Now all we do is plug in 2 in place of y that into the equation 1 \[\huge~\rm~\mathrm30x+25(2) =-10\]
anonymous
  • anonymous
CORRECT.

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