1. We ........ our bicycles to school

A. often ride     B. ride often            C. often riding           D. rides often

2. They ........ their new uniforms, and they ..... smart

A. put - look        B. put on - do      C. put on - look      D. put at - look

3. Mr. Khang ........ our class maths

A. teach      B. teaches     C. does        D. starts

1.A

2.B

3.B

1 . C

2 . B

3 . A

1.C, 2.B, 3.A

\(\frac{1}{3}+\frac{5}{6}-\frac{6}{8}\)

\(=\frac{1}{3}+\frac{5}{6}-\frac{3}{4}\)

\(=\frac{4}{12}+\frac{10}{12}-\frac{9}{12}\)

\(=\frac{5}{12}\)

\(\frac{-4}{11}+\frac{-7}{11}.\frac{8}{15}+\frac{7}{11}.\frac{-7}{15}\)

\(=\frac{-4}{11}+\frac{-7}{11}.\frac{8}{15}+\frac{-7}{11}.\frac{7}{15}\)

\(=\frac{-4}{11}+\frac{-7}{11}.\left(\frac{8}{15}+\frac{7}{15}\right)\)

\(=\frac{-4}{11}+\frac{-7}{11}.1\)

\(=\frac{-4}{11}+\frac{-7}{11}=-1\)

1.They were playing tennis  at 10.30 yesterday morning

2.Anna was doing homework at 5 o'clock this afternoon

3.My father was washing car from five to six

4. This time last year we were living in France

6.I was cooking dinner half an hour ago

7.She was working the studio that time

8.What were you doing from 3 to 6 yesterday afternoon?

-HT-

giúp mik mik cần gấp

| \(\frac{3}{4}x-\frac{1}{2}\)| = \(\frac{1}{4}+1\)

|\(\frac{3}{4}x-\frac{1}{2}\)| = \(\frac{5}{4}\)

Th 1 : \(\frac{3}{4}x=\frac{5}{4}+\frac{1}{2}\)

           \(\frac{3}{4}x=\frac{7}{4}\)

                \(x=\frac{7}{4}:\frac{3}{4}=\frac{7}{3}\)

Th 2 : \(\frac{3}{4}x-\frac{1}{2}=-\frac{5}{4}\)

          \(\frac{3}{4}x=\left(-\frac{5}{4}\right)+\frac{1}{2}\)

            \(\frac{3}{4}x=-\frac{3}{4}\)

             \(x=-\frac{3}{4}:\frac{3}{4}\)

             \(x=-1\)

giups mik nha mik cảm ơn nhiều

đây là bài toán lớp 4 mừ

4 . ( x - 6/7 ) - 3/5 = 1,4 

4 .  ( x - 6/7 ) = 1,4 + 3/5 

4 . ( x - 6/7 ) = 2

x - 6,7 = 2: 4 

x - 6,7 = 1/2 

x = 1/2 + 6,7 

x= 19/14 

nha bạn chúc bạn học tốt 

Trả lời:

x = \(\frac{34}{7}\)

~HT~

4 . ( x - 6/7 ) - 3/5 = 3,4

4 . ( x - 6/7 )          = 3,4 + 3/5

4 . ( x - 6/7 )          = 4

       x - 6/7             = 4 : 4

       x - 6/7             = 1

       x                      = 1 + 6/7

       x                       = 13/7

-HT-

Bạn tự vẽ hình nhé ^-^

a) Ta có: aOx+aOy = xOy

mà 80* + 120* = xOy

=> xOy = 200*

b) Vì tia Ot là tia đối của tia Oa 

=> aOy = yOt 

Vậy a) xOy = 200*, b) yOt = 120*

^-^ nếu có sai sót gì thông cảm nhé :> vì mk học lâu òi 

Trả lời:

x = \(\frac{124}{78}\)

~HT~

x = 124/78