PixelDragon62 PixelDragon62

25-03-2020
Mathematics

contestada

3x - 2y = 10
5x + y = 4

When solving this system of equations by elimination, which could be the resulting equation when a variable has been eliminated?
A) 13x = 18
B) -7x = 2
C) -7y = 62
D) 8x - y = 14

Respuesta :

25-03-2020

3x - 2y = 10
10x + 2y = 8 (everything *2)
minus
Therefore final equation is -7x = 2 B

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