Question

1)7x+1=25-x 2)12-x=5x+6 3)7-2x=3x-13 4)3x-4=x-8 6класс

Answer 1

Ответ:

1)7x+1=25-x

7х+х=25-1

8х=24

х=3

2)12-x=5x+6

-х-5х=6-12

-6х=-6

6х=6

х=1

3)7-2x=3x-13

-2х-3х=-13-7

-5х=-20

5х=20

х=4

4)3x-4=x-8

3х-х=-8+4

2х=-4

х=-2

Answer 2

Відповідь:1)7х+1=25-х

7х+х=25-1

8х=24|:8

Х=3

2)12-х=5х+6

12-6=5х+х

6х=6|:5

х=1

3)7-2х=3х-13

7+13=3х+2х

20=5х

5х=20|:5

х=4

4)3х-4=х-8

3х-х=-8+4

2х=-4|:2

х=-2

Answer 3

It looks like you've provided a set of equations and mentioned "6th grade." I assume you're looking for solutions to these equations. Let's solve each of them step by step:

1. 7x + 1 = 25 - x Add x to both sides: 7x + x + 1 = 25 Combine like terms: 8x + 1 = 25 Subtract 1 from both sides: 8x = 24 Divide both sides by 8: x = 3

2. 12 - x = 5x + 6 Add x to both sides: 12 - x + x = 5x + 6 + x Combine like terms: 12 = 6x + 6 Subtract 6 from both sides: 12 - 6 = 6x Divide both sides by 6: x = 2

3. 7 - 2x = 3x - 13 Add 2x to both sides: 7 + 2x = 3x - 13 + 2x Combine like terms: 7 + 2x = 5x - 13 Add 13 to both sides: 7 + 2x + 13 = 5x Combine like terms: 20 + 2x = 5x Subtract 2x from both sides: 20 = 3x Divide both sides by 3: x = 20 / 3 (or approximately 6.67)

4. 3x - 4 = x - 8 Subtract x from both sides: 3x - x - 4 = -8 Combine like terms: 2x - 4 = -8 Add 4 to both sides: 2x - 4 + 4 = -8 + 4 Combine like terms: 2x = -4 Divide both sides by 2: x = -4 / 2 x = -2

These are the solutions for the given equations. If you have any more questions or need further assistance, feel free to ask!