bài này 1 phép tính cũng làm được

số nào

nhân với ko thì

cũng bằng ko

đó là các nhà khoa

học phát biểu đó

a) x - 36 : 18 = 12

    x -    2      = 12

            x      = 12 + 2

            x      =  14

b) ( x - 36 ) : 18 = 12 

      x - 36          = 12 x 18

      x - 36          = 216

           x            = 216 + 36

           x            = 252

170 du 2 Qua de

Bạn đổi từng luỹ thừa ra rồi tính nhé

SSH :(2015-1)/2+1=1008

TDS: ( 2015+1)*1008/2=1016064

đáp số 1016064

k tớ nha tớ chắc nhắn đúng 100% luôn

Chuyển câu chủ động sang câu bị động

1. Today a large number of people speak English

=> English is spoken by a large number of people today

3. Someone stole all her valuable jewelry last night

=> All her value jewelry was stolen last night

4. They are repairing my piano at the moment

=> My piano is being repaired at the moment

5. A doctor has just examninated John

=> John has been just examinated by a doctor

6. The fire destroyed many houses in my neighborhood

=> Many house in my neighborhoof were destroyed by the fire

7. Tom will return those books to the library tomorrow

=> Those bool will be returned to the library by Tom tomorrow

8. They are demolishing the entire block

=> The entire block is being demonlished by them

9. People use milk to make butter

=> Milk is used to be make butter

10. You must keep your room tidy

=> Your room must be kept tidy by you

11. Nobody saw her at the party last night

=> She wasn't seen at the party

12. The government has not changed the regulation

=> The regulation hasn't been changed by the goverment

13. She did not introduce me to her mother

=> I wasn't introduced to her mother by her

this is Math not Biology

dãy trên có số số hạng là : 

    ( 2015 - 1 ) : 2 + 1 = 1008 ( số ) 

tổng dãy só trên là :

   ( 2015 + 1 ) x 1008 : 2 = 1016064

                  Đ/S : 1016064