How do you solve $2x+4y=6$ and $2x+y= -3$ using substitution?

1 Answer

Mar 14, 2016

$x=-3$
$y=3$

Explanation:

$2x+4y=6" "color(red)(2x=6-4y)$
$color(red)(2x)+y=-3$
$6-4y+y=-3$
$-3y=-6-9$
$3y=9$
$y=9/3" "y=3$
$2x+4(3)=6" "2x+12=6$
$2x=6-12" "2x=-6$
$x=-6/2$
$x=-3$

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How do you solve $2x+4y=6$ and $2x+y= -3$ using substitution?

1 Answer

Explanation:

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