Question

16-7=16-(6+1)=(16-6)-1=10-1=9 это пример решения. как решить по этому образцу следующие примеры? 17-9=17-(?+?)=(17-?)-?=10-?= 12-5=12-(?+?)=(12-?)-?=10-?= 14-8=14-(?+?)=(14-?)-?=10-?= не могу решить, всё неправильно, помогите пожалуйста

Answer 1

17-9=17-(2+7)=(17-7)-2=10-2=8
12-5=12-(2+3)=(12-2)-3=10-3=7
14-8=14-(4+4)=(14-4)-4=10-4=6

Answer 2

To solve the given examples using the same method, let's break down the steps:

Example 1: 16 - 7 We can rewrite this as: 16 - (6 + 1) Next, we can simplify the parentheses: (16 - 6) - 1 Now, we can perform the subtraction inside the parentheses: 10 - 1 Finally, we can calculate the subtraction: 9

Therefore, 16 - 7 = 9.

Example 2: 17 - 9 We want to rewrite this as: 17 - (? + ?) Next, we can simplify the parentheses: (17 - ?) - ? Now, we can perform the subtraction inside the parentheses: 10 - ? To find the value of ?, we subtract 10 from both sides: ? = 10 - 9 Simplifying, we find that ? = 1. Now we can substitute the value of ? back into the equation: (17 - 1) - 1 Performing the subtraction, we find that 16 - 1 = 15. Finally, we can calculate the subtraction: 15 - 1 = 14.

Therefore, 17 - 9 = 14.

Example 3: 12 - 5 We can rewrite this as: 12 - (? + ?) Next, we can simplify the parentheses: (12 - ?) - ? Now, we can perform the subtraction inside the parentheses: 10 - ? To find the value of ?, we subtract 10 from both sides: ? = 10 - 5 Simplifying, we find that ? = 5. Now we can substitute the value of ? back into the equation: (12 - 5) - 5 Performing the subtraction, we find that 7 - 5 = 2. Finally, we can calculate the subtraction: 2 - 5 = -3.

Therefore, 12 - 5 = -3.

Example 4: 14 - 8 We can rewrite this as: 14 - (? + ?) Next, we can simplify the parentheses: (14 - ?) - ? Now, we can perform the subtraction inside the parentheses: 10 - ? To find the value of ?, we subtract 10 from both sides: ? = 10 - 8 Simplifying, we find that ? = 2. Now we can substitute the value of ? back into the equation: (14 - 2) - 2 Performing the subtraction, we find that 12 - 2 = 10. Finally, we can calculate the subtraction: 10 - 2 = 8.

Therefore, 14 - 8 = 8.

I hope this helps! Let me know if you have any further questions.