Bài 1: Quy đồng các phân số sau: a) 17/20, 13/15 và 41/60 b) 25/75, 17/34 và 121/132 Bài 2: Chứng tỏ rằng các phân số sau đây bằng nhau a) 25/53; 2525/5353 và 252525/535353 b) 37/41; 3737/4141 và 373737/414141 Bài 3: Tính tổng các phân số sau: a) 1/1.2 + 1/2.3 + K + 1/2003.2004 b) 1/1.3 + 1/3.5 + 1/5.7 + K + 1/2003.2005 Giúp em với, em cảm ơn! (K = ...)

(-18)+(7-x)=0 3.x|-5|=14 Giúp e với ạ

tinh hieu a-b,biet a=1.2+2.3+3.4+...+98.99 b=1.1+2.2+3.3+...+98.98 giai giup minh nhe

III. Use the words given to make some sentences. 1. Tom / often play / monopoly / his friends. _________________________________________________________ 2. We / should / eat / more / fruits / vegetables. ___________________________________________________________ 3. I / start / play football / when / I / ten years old ___________________________________________________________ 4. In / past, / this house / build / by / my uncle. __________________________________________________________ 5. Read / books / free time / be / my / favorite / hobby. __________________________________________________________

Ai giỏi tiếng anh thì giúp mình với mình ngủ anh lắm IV.​Write the following sentences, beginning as shown, so that the meaning stays the same. 31.Antarctica is colder than any other places in the world. ​Antarctica is ​. 32.Doing morning exercises every morning is good for you. ​You ​. 33.My father has a plan to repaint our house before Tet. ​My father ​. 34.Fansipan is higher than any other mountains in Indochina (Viet Nam, Laos, and Cambodia). ​Fansipan is ​. 35.Nam is the tallest student in his class. ​Nobody in Nam's class

Đặt câu với mỗi từ sau: trung thực: nhân hậu: dã man:

Mọi người giúp mình bài 3 với,mình sắp nộp rồi

1 : Where does he work ? 2 : ................. Do you have music ? I have it on Tuesday 3 : what is she wearing ? She is..............a red skirt and blue T shirt? 4 : what do you yesterday? I...........a bike in the park.?

không phụ thuộc a (3a+2).(2a-1)+(3-a).(6a+2)-17.(a-1)

II. Complete the second sentence so that it means the same as the sentence before. 1. Her taste is not different from mine. => Her taste is ___________________________________________________ 2. I began studying English three years ago. => I have _______________________________________________________ 3. I find carving eggshells interesting. => I enjoy _______________________________________________________ 4. Get up early or you’ll go to school late. => If you don’t get _________________________________________________ 5. They can buy many kinds of goods in Ben Thanh Market. => Many kinds of goods__________________________________________________