10-12/19+7/1910-12/19+7/19
=10-(7/19-12/19)
=10-5/19
=9又14/19
猜你喜欢
- 1(1)9×10分之3÷10分之9 (2)24×18分之5-6分之5 (3)3分之2÷(15分之2×6分之5)
- 2青春期是生长发育的旺盛时期,对各种营养的需求量远远高于成年人,我们应该怎样对待青春期的营养?
- 39块完全一样的蛋糕装在4个盒子里,每个盒子至少要有3块蛋糕,问:怎样装?
- 4Directions:Read the following passage carefully and choose the correct one from the four choices
- 5《湖心亭看雪》中“痴”表现在哪三方面?
- 6微分方程DY/DX-E的X次方/Y=0的解
- 7下面有6张数字卡片 用它们组成的六位数的5倍仍然是一个六位数 而且也是由这6个数字组成
- 8they each { } two apples.Ahas Bhave选哪个,说名理由
- 9已知A=a2-ab,B=ab+b2,则A+B=_,A-B=_,3A-2B=_.
- 10The old man needs_______ A being looked after B.look after C.to look after D.looking after