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How do you find the solution of the system of equations $x - 2 y = 4$ $x-2y = 4$ and $2 x + 3 y = 1$ $2x + 3y = 1$ ?

1 Answer

Jun 17, 2018

$x = 2, y = - 1$ $x=2,y=-1$

Explanation:

Multiplying the first equation by $- 2$ $-2$ and adding to the second we get

$7 y = - 7$ $7y=-7$

so $y = - 1$ $y=-1$
plugging this in the first equation

$x + 2 = 4$ $x+2=4$
so

$x = 2$ $x=2$

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