已知2x+Y+3z=23,x=4y+5z=36,求X+2Y+3Z~
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已知2x+Y+3z=23,x=4y+5z=36,求X+2Y+3Z~
写错了,2x+Y+3z=23,x+4y+5z=36,求X+2Y+3z~
写错了,2x+Y+3z=23,x+4y+5z=36,求X+2Y+3z~
![已知2x+Y+3z=23,x=4y+5z=36,求X+2Y+3Z~](/uploads/image/z/16106073-33-3.jpg?t=%E5%B7%B2%E7%9F%A52x%2BY%2B3z%3D23%2Cx%3D4y%2B5z%3D36%2C%E6%B1%82X%2B2Y%2B3Z%7E)
2x+y+3z=23,x+4y+5z=36
4x+2y+6z=46,3x+12y+15z=108
两式相加:
7x+14y+21z=154
x+2y+3z=22
4x+2y+6z=46,3x+12y+15z=108
两式相加:
7x+14y+21z=154
x+2y+3z=22
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