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
Answer Link
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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