ladykee ladykee
  • 02-10-2016
  • Mathematics
contestada

-3x+3y=-6
elimination method

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Аноним Аноним
  • 02-10-2016
The answer is y= x - 2 but idk any eliminating methods, put more info so I can explain better
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texaschic101
texaschic101 texaschic101
  • 02-10-2016
-3x + 3y = -6...multiply by 4
4x - 7y = -6 ...multiply by 3
-----------------
-12x + 12y = -24 (result of multiplying by 4)
12x - 21y = -18 (result of multiplying by 3)
----------------add
-9y = -42
y = 42/9 reduces to 14/3

4x - 7y = -6
4x - 7(14/3) = -6
4x - 98/3 = -6
4x = -6 + 98/3
4x = -18/3 + 98/3
4x = 80/3
x = 80/3 * 1/4
x = 80/12 reduces to 20/3

so ur solution is (20/3, 14/3)
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