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25-04-2019
Mathematics

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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?

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sofiaSMEB22 sofiaSMEB22

25-04-2019

Answer:

2x + y
3 x - 2y
-1

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

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

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