Question

7-х=3. 6-х=2 8-х=3. 12-х=7 11-х=2. 21-х=12

Answer 1

Ответ:

$7 - x = 3 \\ x = 7 - 3 \\ x = 4$

$6 - x = 2 \\ x = 6 - 2 \\ x = 4$

$8 - x = 3 \\ x = 8 - 3 \\ x = 5$

$12 - x = 7 \\ x = 12 - 7 \\ x = 5$

$11 - x = 2 \\ x = 11 - 2 \\ x = 9$

$21 - x = 12 \\ x = 21 - 12 \\ x = 9$

Answer 2

Ответ:

7-x=3

x=7-3

x=4

7-4=3

6-x=2

x=6-2

x=4

6-4=2

8-x=3

x=8-3

x=5

8-5=3

12-x=7

x=12-7

x=5

12-5=7

11-x=2

x=11-2

x=9

11-9=2

21-x=12

x=21-12

x=9

21-9=12

Answer 3

To solve these equations for the variable "x," you can follow these steps:

1. 7 - x = 3: Subtract 3 from both sides to isolate x. 7 - x - 3 = 3 - 3 7 - 3 - x = 0 4 - x = 0 Now, subtract 4 from both sides to solve for x. 4 - 4 - x = 0 - 4 -x = -4 Finally, divide both sides by -1 to get the value of x. x = 4

2. 6 - x = 2: Following the same steps as above: 6 - x - 2 = 2 - 2 6 - 2 - x = 0 4 - x = 0 x = 4

3. 8 - x = 3: 8 - x - 3 = 3 - 3 8 - 3 - x = 0 5 - x = 0 x = 5

4. 12 - x = 7: 12 - x - 7 = 7 - 7 12 - 7 - x = 0 5 - x = 0 x = 5

5. 11 - x = 2: 11 - x - 2 = 2 - 2 11 - 2 - x = 0 9 - x = 0 x = 9

6. 21 - x = 12: 21 - x - 12 = 12 - 12 21 - 12 - x = 0 9 - x = 0 x = 9

After solving all the equations, you find that the value of "x" is the same in each case, which is:

x = 4, 5, 9 (any of these values satisfies all the given equations).