What is the solution to the system of linear equations $2x+y=-9, -2x-3y=11$ ?

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Answer 1 · 2018-04-24T04:14:10

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

$2x+y=-9$

$-2x-3y=11$

Adding,

-2y = 2

$y=-1$

$x = 1/2 (-9 -y) = 1/2(-9 - -1) = -4$

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

Check:

$2(-4) + -1 = -9 quad sqrt$

$-2 (-4) -3 (-1) = 8 + 3= 11 quad sqrt$

What is the solution to the system of linear equations 2x+y=-9, -2x-3y=112x+y=-9, -2x-3y=11?