anonymous
  • anonymous
Solve the system of equations. x + 3y = −1 2x + 2y = 6
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
You can solve it by elimination
anonymous
  • anonymous
double the top equation so 2x+6y=-2 now subtract the second equation from that to only have y in the equation and solve for y, then apply the y value to any of the first 2 equations to solve for x.
anonymous
  • anonymous
You can divide the second equation by -2 x cancels and you have y= -4 plug in y to find x

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anonymous
  • anonymous
and you have solved through elimination
anonymous
  • anonymous
Thats new, I don't think I have actually ever used division for elimination in simultaneous equations *-*
zzr0ck3r
  • zzr0ck3r
division is just multiplying by a reciprocal.
anonymous
  • anonymous
When I noticed that I become a lot faster in arithmetic, breaking down numbers into its factors for easier mental maths

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