Question

10-5+4=;10-(5+4)=;6+(20-11)=;9-7+2=;9-(7+2)=;(9+6)-11=

Answer 1

здравствуй.

10 - 5 + 4 = 5 + 4 = 9

10 - (5 + 4) = 10 - 9 = 1

6 + (20 - 11) = 6 + 9 = 15

9 - 7 + 2 = 2 + 2 = 4

9 - (7 + 2) = 9 - 9 = 1

(9 + 6) - 11 = 15 - 11 = 4

удачи в учёбе.

Answer 2

Let's solve each of these equations step by step:

1. 10 - 5 + 4 = ? First, subtract 5 from 10: 10 - 5 = 5 Then, add 4 to 5: 5 + 4 = 9 Therefore, 10 - 5 + 4 equals 9.

2. 10 - (5 + 4) = ? Inside the parentheses, add 5 and 4: 5 + 4 = 9 Subtract 9 from 10: 10 - 9 = 1 Therefore, 10 - (5 + 4) equals 1.

3. 6 + (20 - 11) = ? Inside the parentheses, subtract 11 from 20: 20 - 11 = 9 Then, add 6 to 9: 6 + 9 = 15 Therefore, 6 + (20 - 11) equals 15.

4. 9 - 7 + 2 = ? First, subtract 7 from 9: 9 - 7 = 2 Then, add 2 to 2: 2 + 2 = 4 Therefore, 9 - 7 + 2 equals 4.

5. 9 - (7 + 2) = ? Inside the parentheses, add 7 and 2: 7 + 2 = 9 Subtract 9 from 9: 9 - 9 = 0 Therefore, 9 - (7 + 2) equals 0.

6. (9 + 6) - 11 = ? First, add 9 and 6: 9 + 6 = 15 Then, subtract 11 from 15: 15 - 11 = 4 Therefore, (9 + 6) - 11 equals 4.

To summarize:

1. 10 - 5 + 4 = 9
2. 10 - (5 + 4) = 1
3. 6 + (20 - 11) = 15
4. 9 - 7 + 2 = 4
5. 9 - (7 + 2) = 0
6. (9 + 6) - 11 = 4