解关于x的方程x+a+b/c+x+b+c/a+x+c+a/b=-3
展开全部
题目是(x+a+b)/c+(x+b+c)/a+(x+c+a)/b=-3 吧
解:x/c +a/c +b/c + x/a + b/a +c/a + x/b +c/b +a/b =-3 去括号
(1/a +1/b +1/c )* x = -(3+ a/c +b/c + b/a +c/a +c/b +a/b) 移项
(1/a +1/b +a/c) *x = -[(1+a/c +b/c) +(1+ b/a +c/a ) +(1+c/b +a/b)]
(1/a +1/b +a/c) *x = -[(a+b+c)/c +(a+b+c )/a +(a+b+c )/b]
(1/a +1/b +a/c) *x = -[1/c +1/a +1/b] *(a+b+c)
x=-a-b-c
解:x/c +a/c +b/c + x/a + b/a +c/a + x/b +c/b +a/b =-3 去括号
(1/a +1/b +1/c )* x = -(3+ a/c +b/c + b/a +c/a +c/b +a/b) 移项
(1/a +1/b +a/c) *x = -[(1+a/c +b/c) +(1+ b/a +c/a ) +(1+c/b +a/b)]
(1/a +1/b +a/c) *x = -[(a+b+c)/c +(a+b+c )/a +(a+b+c )/b]
(1/a +1/b +a/c) *x = -[1/c +1/a +1/b] *(a+b+c)
x=-a-b-c
展开全部
解:x/c +a/c +b/c + x/a + b/a +c/a + x/b +c/b +a/b =-3
(1/a +1/b +1/c )* x = -(3+ a/c +b/c + b/a +c/a +c/b +a/b)
(1/a +1/b +a/c) *x = -[(1+a/c +b/c) +(1+ b/a +c/a ) +(1+c/b +a/b)]
(1/a +1/b +a/c) *x = -[(a+b+c)/c +(a+b+c )/a +(a+b+c )/b]
(1/a +1/b +a/c) *x = -[1/c +1/a +1/b] *(a+b+c)
x=-a-b-c
(1/a +1/b +1/c )* x = -(3+ a/c +b/c + b/a +c/a +c/b +a/b)
(1/a +1/b +a/c) *x = -[(1+a/c +b/c) +(1+ b/a +c/a ) +(1+c/b +a/b)]
(1/a +1/b +a/c) *x = -[(a+b+c)/c +(a+b+c )/a +(a+b+c )/b]
(1/a +1/b +a/c) *x = -[1/c +1/a +1/b] *(a+b+c)
x=-a-b-c
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
两边加3得
(x+a+b+c)(1/a+1/b+1/c)=0
所以x=-(a+b+c)
(x+a+b+c)(1/a+1/b+1/c)=0
所以x=-(a+b+c)
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询