sadykovam1 sadykovam1

23-05-2017
Mathematics

contestada

Solve by elimination
5x-y=12
3x+2y=2

Respuesta :

c00lb34n5 c00lb34n5

23-05-2017

(2)5x-y=12
3x+2y=2
10x-2y=12
3x+2y=2
13x=2
x=0.15

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apologiabiology apologiabiology

23-05-2017

eliminate y
time first equation by 2 an add them together

10x-2y=24
3x+2y=2 +
13x+0y=26

13x=26
divide both sides by 13
x=2

sub back

3x+2y=2
3(2)+2y=2
6+2y=2
minus 6
2y=-4
divide 2
y=-2

(x,y)
(2,-2)

Answer Link

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