x + 2y + 3z = 6, 2x + 4y + z = 7, 3x + 2y + 3z = 8.
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Answer:
x+2y+3z=6
2x+4y+z=7
3x+2y+3z=8
6x+8y+7z=21
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1
x + 2x + 3x = 6x
2y + 4y + 2y = 8y
z + 3z + 3z = 7z
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