classifique e resolva os sistemas abaixo:
x+y=8
2x+3y+z=21 é:
3x+5y+2z=34
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x+y-3z=5
2x+y-5z=5
x+2y-4z=10
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x+3y+z=-2
3x-y+2z=4
2x+5y-3z=-3
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3x-y+z=2
2x+y-z=8
4x+y-z=12
Respostas
Explicação passo-a-passo:
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