18hun699
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5x + 2y = 6 3x + y = 4 Which of the following is part of the solution to the system of equations?
1)x = -2 
2)y = -2
3)x = 1

Respuesta :

texaschic101
5x + 2y = 6
3x + y = 4....multiply by -2
-------------
5x + 2y = 6
-6x - 2y = -8 (result of multiplying by -2)
-------------add
-x = -2
x = 2

5x + 2y = 6
5(2) + 2y = 6
10 + 2y = 6
2y = 6 - 10
2y = -4
y = -4/2
y = -2 <=== here it is
The answer to this problem is y=-2

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