已知a/e=b/f=c/g=5/3 (e+2f-3g≠0),则(a+2b-3c)/(e+2f-3g)=______
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已知a/e=b/f=c/g=5/3(e+2f-3g≠0),则(a+2b-3c)/(e+2f-3g)=______已知a/e=b/f=c/g=5/3(e+2f-3g≠0),则(a+2b-3c)/(e+2
已知a/e=b/f=c/g=5/3 (e+2f-3g≠0),则(a+2b-3c)/(e+2f-3g)=______
已知a/e=b/f=c/g=5/3 (e+2f-3g≠0),则(a+2b-3c)/(e+2f-3g)=______
已知a/e=b/f=c/g=5/3 (e+2f-3g≠0),则(a+2b-3c)/(e+2f-3g)=______
a=5/3*e b=5/3*f c=5/3*g
a+2b-3c=5/3(e+2f-3g)
(a+2b-3c)/(e+2f-3g)=5/3
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设a=5x,e=3x,b=5y,f=3y,c=5z,g=3z
则原式=(5x+10y-15z)/(3x+6y-9z)=5/3