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How do you solve the system $2 x + 4 y = 14$ $2x+4y=14$ and $- 3 x - 3 y = - 9$ $-3x-3y=-9$ analytically?

1 Answer

Jun 18, 2018

$x = - 1, y = 4$ $x=-1,y=4$

Explanation:

Simplifying your System we get

$x + 2 y = 7$ $x+2y=7$
$x + y = 3$ $x+y=3$
Multiplying the second equation by $- 1$ $-1$ and adding to the first we get

$y = 4$ $y=4$
and for $x$ $x$ we find
$x = 3 - 4 = - 1$ $x=3-4=-1$

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