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2x + y = 3 x - 2y = -1 If equation two is multiplied by -2 and then the equations are added, the result is what?

2x + y = 3 x - 2y = -1 If equation two is multiplied by -2 and then the equations are added, the result is what?
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1 vote
2x + y = 3 x - 2y = -1 If equation two is multiplied by -2 and then the equations are added, the result is what?

asked
User Mottek
by
8.4k points

1 Answer

2 votes

Answer:

  1. 2x + y
  2. 3 x - 2y
  3. -1

2(3 x - 2y) = -6x + 4y

2x + y + -6x + 4y + -1 = -4x + 5y -1

answered
User Mrfelis
by
7.9k points
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