(a+c)-c=(b+c)-c对还是错?

a-b-c=a-(b+c)对还是错? 如果a:b=c:d,那么b:a=d:c对还是错? a>b>c,a+b+c=0,求证c/(a-c)>c/(b-c) 根据A:B=C分之D可以知道,A乘D=B乘C.对还是错 r=k*c(A)*c(B)*c(C) (a-b-c)(b+c-a)(c-a+b)= C语言中,max=(a>((b>c)?b:c)?a:(b>c:b:c)); (A-B)×C=(A×C)-(B×C)是否对任意集合A,B,C,D均成立? a=b+c a+b=c+c+c 问a等于几个c A+B=C+D?还是啥? max=a>b?(a>c?a:c):(b>c?b:c); mid=a>b?(ab?(a>c?a:c):(b>c?b:c) c 语言 （a>b)==c 是a==c 还是b==c