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~
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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~已知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~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~
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~写错了,2x+Y+3z=23,x+4y+5z=36,求X+2Y+3z~
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
你是不是题目抄错了呀!
把x=4y+5z带入2x+y+3z=23中,得8y+13z=23
而4y+5z=36,怎么可能呢?
。。。。。。。。。。。。。。。无语
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