化简：x-+2=（）。-八年级数学

更多内容推荐

• 计算：=（）。-九年级数学
• The mainland _____fresh water and vegetables _____ people in Hong Kong every day. [ ]A. provides ; f
• After studying in a medical college for five years, Jane ______ her job as a doctor in the countrysi
• The information you give in the application is too general. You should _____ something special about
• Though I ____ his words this time , I don't ____ him. [ ] A. believe in , believe B. believe ,
• After graduation from college, he began to wander from city to city,______a suitable job.[ ]A. hunti
• This school was _____ in 1950 and has a history of nearly sixty years.[ ]A. got up B. set up C. sent
• Could you give me a hand? It seems that my strength has ______. [ ]A. used up B. been given out C. r
• Modern forms of transportation and communication have done much to ______ the isolation（隔离）of life i
• Although they lost their jobs, savings and unemployment benefits allow the couple to ______ their co
• Be optimistic, young man! You have to_____ the fact that you have failed in the job interview. [ ]A.
• — Is there a Mr Smith living here? — Yes, there______, but he ______ two days ago. [ ]A. is; moves o
• I often _____the words I don't know in the dictionary or on the internet.[ ]A. look up B. look
• To keep healthy, Professor Johnson _____ cycling as a regular form of exercise after he retired. [ ]
• — How cold the weather is! I wonder how the crops survive under such heavy snow? — Don't worry.
• Google launched its Body Browser, an application that allows people to _____ the human body. [ ]A. p
• 完成句子。1. Honesty and hard work ___________ ___________ (有助于) success and happiness. 2. We'd bett
• "Goodbye, then," she said, without even _____ from her book. [ ]A. looking down B. looking
• It's a good idea. But who's going to _____ the plan?I think Jenny will. [ ]A. set aside B.
• － Have you got _____with your test paper? － No. I need another twenty minutes. [ ]A. through B. up C
• I can't quite follow you-what you just said doesn't _____. [ ]A. make senseB. give senseC.
• Our football team will compete against the Japanese team this evening. Let's go and _____. [ ]A
• The volunteers were so kind that they devoted most of the time _____ the disabled. [ ]A. to help B.
• Smell the flowers before you go to sleep, and you may just _____ sweet dreams. [ ]A. keep up with B.
• You'd better fly somewhere in the west. Then you can _____ a hire car and travel around. [ ]A.
• China is a country _____ 56 different nationalities, among which Han _____ the majority of its popul
• His health _____under the pressure of work and he had to stay in hospital for a month. [ ]A. broke u
• There are many new bikes ____ for you in the shop. I think you can buy one that you like most.[ ]A.
• Our teacher has a _____ for thinking up ways _____ his speeches attractive. [ ]A. gift, of makingB.
• You may imagine what great difficulty I had _____complicated ideas in simple English.[ ]A. expressin
• It was Sunday and there were so many people in the streets that he found it difficult to _____ to th
• In fifteen terrible seconds a large city _____. [ ]A. lied in ruin B. lay in ruin C. lied in ruins D
• The joke the naughty boy _____ his teacher made many people angry. [ ]A. made on B. played on C. pla
• Mary's being hurt ____ the uncertainty of our winning in the game. [ ]A. added B. added up C. a
• After World War II, many of the buildings in the city _____. [ ]A. lied in ruinsB. lied in ruin C. l
• 甲、乙两人两次同时在同一粮店购买粮食（假设两次购买粮食的单价不相同），甲每次购买粮食100kg，乙每次购粮用去100元。（1）设第一、第二次购粮单价分别为x元/kg和y元/kg，用含-八年级数学
• 计算：=（）。-九年级数学
• 已知，则（）。-八年级数学
• 化简的结果是[]A.B.C.D.-八年级数学
• 化简的结果是[]A.B.C.1D.-1-八年级数学
• 计算：。-八年级数学
• 下列方程中，是分式方程的个数是（）①x+13=1，②3x+1=4，③x2-1x+1=1，④x2+x-13=2，⑤x+1π+2=x．A．1个B．2个C．3个D．4个-数学
• 方程－=0的解为（）A．x=2B．x=－2C．x=3D．x=－3-九年级数学
• 济宁市“五城同创”活动中，一项绿化工程由甲、乙两工程队承担.已知甲工程队单独完成这项工作需120天，甲工程队单独工作30天后，乙工程队参与合做，两队又共同工作了36天完成-七年级数学
• 解方程：=1﹣．-七年级数学
• 解分式方程：＋＝.-七年级数学
• 若分式方程：无解,则k=_________．-九年级数学
• 某服装加工厂计划加工400套运动服，在加工完160套后，采用了新技术，工作效率比原计划提高了20%，结果共有了18天完成全部任务．设原计划每天加工x套运动服，根据题意可列方程-七年级数学
• 水源村在今年退耕还林活动中，计划植树200亩，全村在完成植树40亩后，某环保组织加入村民植树活动，并且该环保组织植树的速度是全村植树速度的1.5倍，整个植树过程共用了13-七年级数学
• Ralph W. Emerson would always ______ new ideas that occurred to him.A．set offB．set aboutC．set upD．se