Question

(650+40)-390 (660-40)-390 (670+40)-390 560-(100+60) 560-(100-40) 560-(100-20) (810-90)-100 (810+60)-100 (810+30)-100​

Answer 1

1. (650+40)-390=300
2. (660-40)-390= 230
3. (670+40)-390= 320
4. 560-(100+60)=400
5. 560-(100-40)= 500
6. 560-(100-20)= 540
7. (810-90)-100= 620
8. (810+60)-100= 770
9. (810+30)= 740

Answer 2

Ну типа так что не понятно

Answer 3

Let's calculate each of these expressions step by step:

1. (650+40)-390 = 690 - 390 = 300

2. (660-40)-390 = 620 - 390 = 230

3. (670+40)-390 = 710 - 390 = 320

4. 560-(100+60) = 560 - 160 = 400

5. 560-(100-40) = 560 - 60 = 500

6. 560-(100-20) = 560 - 80 = 480

7. (810-90)-100 = 720 - 100 = 620

8. (810+60)-100 = 870 - 100 = 770

9. (810+30)-100 = 840 - 100 = 740

So, those are the results for each of the expressions you provided.