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己知x+2y+3z=10,5x+4y+3z=8,求x+y+z的值.
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己知x+2y+3z=10,5x+4y+3z=8,求x+y+z的值.
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己知x+2y+3z=10,5x+4y+3z=8,得(x+2y+3z)+(5x+4y+3z)=10+8
6x+6y+6z=18
X+y+z=18/6=3
6x+6y+6z=18
X+y+z=18/6=3
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