5x-2x=9 -3x+0.5x=10
7x-4.5x=2.5*3-5 6x-7=4x-5
x+3x=-16 3x+5=4x+1
9-3x=5x+5 16x-2.5x-7.5x=5
2x+3x+4x=18 13x-15x+x=-3
猜你喜欢
- 1I often see the young man to walk his dog in the street 请问这句话哪里错了,
- 21+(-2)十(-3)十4十(-5)十(-6)十7十……十97十(-98)十(-99)十100
- 3把下面的词语补充完整,并解释所填的字
- 4用化学方法鉴别乙苯和苯乙烯
- 5Yesterday the little boy ______his way.
- 6Our plant need a small pot of soil,a lot of light and lots of water.怎么改错?
- 7春光染绿我们双脚第一小节表达了作者怎样的思想感情?
- 8there are 30 students in our class(改为特殊疑问句)
- 9在铭牌上标有“100欧,9瓦”的电阻其允许通过的额定电流是0.3安,这是怎么算出来的,谢谢
- 101体积某烃蒸汽完全燃烧生成的CO2比H2O(g)少1体积(体积均在相同条件下测定),0.1mol该烃完全燃烧其生成物...