分式的加法与减法
一、方法与能力
1、计算
①
②
③
④
⑤
⑥
⑦ ·
二、拓展与提升
2、先化简，再求值：
，
其中
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文档为doc格式
![](https://wkrtcs.bdimg.com/rtcs/image?w=3&md5sum=97f8b85bc308adec312a0b332cd3c92d&sign=21c8702e67&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=121&ipr={"t":"img","w":"3","h":"1","dataType":"png","c":"word/media/image1.png","imgOriW":324,"imgOriH":36})
、计算![](https://wkrtcs.bdimg.com/rtcs/image?w=101&md5sum=97f8b85bc308adec312a0b332cd3c92d&sign=21c8702e67&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=121&ipr={"t":"img","w":"101","h":"49","dataType":"png","c":"word/media/image2_1.png","imgOriW":1664,"imgOriH":800})
![](https://wkrtcs.bdimg.com/rtcs/image?w=117&md5sum=97f8b85bc308adec312a0b332cd3c92d&sign=21c8702e67&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=121&ipr={"t":"img","w":"117","h":"51","dataType":"png","c":"word/media/image3_1.png","imgOriW":1920,"imgOriH":832})
![](https://wkrtcs.bdimg.com/rtcs/image?w=78&md5sum=97f8b85bc308adec312a0b332cd3c92d&sign=21c8702e67&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=121&ipr={"t":"img","w":"78","h":"53","dataType":"png","c":"word/media/image4_1.png","imgOriW":1280,"imgOriH":864})
![](https://wkrtcs.bdimg.com/rtcs/image?w=3&md5sum=97f8b85bc308adec312a0b332cd3c92d&sign=21c8702e67&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=121&ipr={"t":"img","w":"3","h":"2","dataType":"png","c":"word/media/image1.png","imgOriW":324,"imgOriH":36})
![](https://wkrtcs.bdimg.com/rtcs/image?w=96&md5sum=97f8b85bc308adec312a0b332cd3c92d&sign=21c8702e67&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=121&ipr={"t":"img","w":"96","h":"50","dataType":"png","c":"word/media/image6_1.png","imgOriW":1536,"imgOriH":800})
![](https://wkrtcs.bdimg.com/rtcs/image?w=155&md5sum=97f8b85bc308adec312a0b332cd3c92d&sign=21c8702e67&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=121&ipr={"t":"img","w":"155","h":"52","dataType":"png","c":"word/media/image7_1.png","imgOriW":2496,"imgOriH":832})
![](https://wkrtcs.bdimg.com/rtcs/image?w=152&md5sum=97f8b85bc308adec312a0b332cd3c92d&sign=21c8702e67&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=121&ipr={"t":"img","w":"152","h":"52","dataType":"png","c":"word/media/image8_1.png","imgOriW":2464,"imgOriH":832})
·、先化简，再求值：![](https://wkrtcs.bdimg.com/rtcs/image?w=175&md5sum=97f8b85bc308adec312a0b332cd3c92d&sign=21c8702e67&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=121&ipr={"t":"img","w":"175","h":"52","dataType":"png","c":"word/media/image10_1.png","imgOriW":2419,"imgOriH":723})
，![](https://wkrtcs.bdimg.com/rtcs/image?w=97&md5sum=97f8b85bc308adec312a0b332cd3c92d&sign=21c8702e67&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=121&ipr={"t":"img","w":"97","h":"26","dataType":"png","c":"word/media/image11_1.png","imgOriW":1536,"imgOriH":416})
