已知a,b,c满足{4a-5b+2c=0,a+4b-3c=0}且abc不等于0则a:b:c=?
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已知a,b,c满足{4a-5b+2c=0,a+4b-3c=0}且abc不等于0则a:b:c=?
已知a,b,c满足{4a-5b+2c=0,a+4b-3c=0}且abc不等于0则a:b:c=?
已知a,b,c满足{4a-5b+2c=0,a+4b-3c=0}且abc不等于0则a:b:c=?
b=2a,c=3a,所以a:b:c=1:2:3
推算出b、c跟a的关系你自己来吧,这题自己都不会做,数学你还怎么学啊
这是那单元的,初一的吗???下册的?