mapboy9
mapboy9 mapboy9
  • 15-03-2017
  • Mathematics
contestada

Solve by addition ANSWER NOW

Solve by addition ANSWER NOW class=

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texaschic101
texaschic101 texaschic101
  • 15-03-2017
-3x + y = 3
3x + 2y = -12
-----------------add
        3y = - 9
         y = -9/3
         y = -3

3x + 2y = -12
3x + 2(-3) = -12
3x - 6 = -12
3x = -12 + 6
3x = - 6
x = -6/3
x = -2

solution is (-2,-3)


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