七年级数学要有过程的,求学霸,
如题所述
π取什么值
追答![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/cb8065380cd791239c89f8e9ab345982b3b780c5?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
追问能帮我再做一题吗?
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/a8773912b31bb051522edcb5307adab44aede021?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
可以吗
追答好,我看看
能不能再发起一个问题,我还能赚点财富值
😊
追问我发咯这个问题
没人回答
追答我找找
找不到你的发问
算啦
我发答案好了
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/79f0f736afc379319abdd0b4edc4b74542a91151?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
追问谢谢
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第1个回答 2015-10-18
快采纳~
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/5882b2b7d0a20cf427199e4270094b36adaf99a5?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
追问你手机不好吧
追答电脑~~。我刷新网页慢了~
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...要过程,请标明题号!谢谢大家!急求,学霸来帮帮吧!七年级数学...答:回答:第一题:因为有相同解,所以x,y都相等,故2x-3y=7和3x+y=5,求得x,y的值,再代入。 第二题:有式子可知,ax+by-12=0 , ay-bx+1=0代入x,y的值,再解a,b即可。 第三题:无穷多个解也就是恒等。所以m-2=0 m-4=-n 第四题:xyz不等于0,所以x,y,z都不为零,x+3y+5z=0,变为x...