证明直线与平面平行

（1+1/3+1/5+1/10+1/15+1/30）÷（1/2+1/4+1/6+1/12+1/20+1/60）一定要是简便运算! 问两个问题.通分：(x+4)/(x^2-8x+15)、(x+5)/(x^2+x-12)和(x-3)/(x^2-x-20).先说他们的最小公分母是...问两个问题.通分：(x+4)/(x^2-8x+15)、(x+5)/(x^2+x-12)和(x-3)/(x^2-x-20).先说他们的最小公分母是多少,再计算. 你看不懂中文吗 翻译成英文 英语翻译Iu 智齿的歌词的翻译.中文翻译!什么是中文翻译!看不懂中文啊?不是中文音译! 求f（x）《初智齿》的MV 韩国歌曲《给你看》的中文翻译 英语翻译1.心在谩骂2.依然3.promise4.如何是好5.lovely day6.默默无语六首歌的中文翻译, 英语翻译What's your spiritual IQ?Her ex had done it again.After missing their 10-year-old daughter's dance recital,he showed up the following day with a bouquet of roses."My first impulse was to tear into him," admits my friend Jennie.Then some p earth song 的中文翻译 英语翻译it's a little bit funny this feeling insidei'm not one of those who can easily hidei don't have much money but boy if i didi'd buy a big house where we both could liveif i was a sculptor,but then again,noor a man who makes potions in a tr 英语翻译Oh,tie me to the end of a kite So I can go on,I can go on with my life Every marigold I pass below will be my guiding light I just want to go away from here Oh,tie me to the end of a kite So I can go on,I can go on with my life Every time 英语翻译我说的是 歌词翻译 英语翻译前面一段和后面一段的不一样.全部的中文翻译.me想学唱、谢谢 f(x)的NU ABO歌词中文意思是什么? 12x=15(x-1) x=5 12*5=60元 96/(X+12)+40/60=96/X 怎么做...要过程~快快~急~ x＝12－x 求x x的平方＝12－x 求x不好意思数学上得平方符号打不出来 15*15*x=10*15*30 x/10-x/15=30 x/30=30 x=900 （1+15%）x（1+10%）=（1+30%）x-700 解500×10％+X=15％×﹙500+X﹚ 15分之6=【 】÷【 】÷【 】 （）分之6＝15分之10=6分之（）. 解方程：x+y=5000 x/10+y/10/3=15*60 60%x=3分之1怎么写要过程 (x+4.5)*3=60 为什么27^x/3=3^x 27-x=(45-x)*25%解方程 x/(1-46%)=27分之25 若x^3+x^2+x+1=0,则x^-27+x^-26+x^-25+……+x^-1+1+x+……+x^26+x^27=? x(19+25)x=27求被告人个任何人 （1-x/60）÷1/15+x=45 求解答这个方程,