Change these sentences into plural sentences:

1. This is an armchair                   ⇒ .......................

2. I am a student                          ⇒ ........................

3. It is a couch                              ⇒ .......................

4. There is a lake near the house ⇒ ........................

5. What is this? It is a stereo        ⇒ .........................

6. What is that? It is a bookshelf  ⇒ .........................

7. That is an eraser                      ⇒ .........................

A

\(\dfrac{-5}{6}\) + \(\dfrac{8}{3}\) + \(\dfrac{-29}{6}\) ≤ x ≤ \(\dfrac{-1}{2}\) + 2 + \(\dfrac{5}{2}\)

( 2,7x - 1\(\dfrac{1}{2}\)x) : \(\dfrac{2}{7}\)= \(\dfrac{-21}{4}\)

tìm x: \(\dfrac{3}{x+5}\)= 15%

\(\dfrac{1}{2}\)-x + \(\dfrac{2}{3}\)x -1 = -3\(\dfrac{1}{3}\)

tìm x:

\(\dfrac{x+1}{3}\)= \(\dfrac{-3}{-9}\)