Question

八年级分式通分，好难啊

看清楚题目，我觉得好难啊，一定要帮帮我啊，写出过程，急着明天交作业啊

Answer 1

(3a-6b)/(a+b)-(5a-6b)/(a-b)-(4a-5b)/(a+b)-(7a-8b)/(a-b)

=(3a-6b-4a+5b)/(a+b)-(5a-6b+7a-8b)/(a-b)

=(-a-b)/(a+b)-(12a-14b)/(a-b)

=-1-(12a-14b)/(a-b)

=(15b-13a)/(a-b)

Answer 2

见下图

Answer 3

你的字，比较赖