Question

me ajudem a resolver essa questão pelo amor de Deus

Answer 1

2x-y+4z=3
-x+3y-2z=6
3x-y+5z=4

2x-y+4z=3
-x+3y-2z=6x(2)
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2x-y+4z=3
-2x+6y-4z=12
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5y=15
y=15/5=3
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2x-y+4z=3
3x-y+5z=4x(-1)
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2x-y+4z=3
-3x+y-5z=-4
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-x-z=-1
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-x+3y-2z=6
3x-y+5z=4x(3)
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-x+3y-2z=6
9x-3y+15z=12
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8x+13z=18
-x-z=-1x(8)
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8x+13z=18
-8x-8z=-8
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5z=10
z=10/5=2
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2x-y+4z=3
2x-3+4.2=3
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2x-3+8=3
2x+5=3
2x=3-5
2x=-2
x=-2/2
x=-1