Question

2x-3=x+1 7x+3=3x+27 3x-7=2x+3 42-x=2x+9 20+3x=4-x

Answer 1

Ответ:

1. 4

2. 6

3. 10

4. 11

5. -4

Пошаговое объяснение:

1. 2x - x = 1+3

  x = 4

2. 7x - 3x = 27 - 3

4x = 24

x = 6

3. 3x -2x  = 3 + 7

   x = 10

4. -x -2x = 9 - 42

   -3x = -33

    x = 11

5. 3x +x = 4 - 20

  4x = -16

  x = -4

Answer 2

Ответ:

Пошаговое объяснение:

1)2х-3=х+1

2х-х=1+3

х=4

2) 7х+3=3х+27

7х-3х=27-3

4х=24

х=6

3) 3х-7=2х+3

3х-2х=3+7

х=10

4) 42-х=2х+9

42-9=2х+х

33=3х

х=11

5)20+3х=4-х

3х+х=4-20

4х=-16

х=-4

Answer 3

To solve each of these equations, you'll want to isolate the variable "x." Here are the step-by-step solutions for each equation:

1. 2x - 3 = x + 1

   Subtract 'x' from both sides: 2x - x - 3 = x - x + 1 x - 3 = 1

   Add 3 to both sides: x - 3 + 3 = 1 + 3 x = 4

   So, the solution is x = 4.

2. 7x + 3 = 3x + 27

   Subtract '3x' from both sides: 7x - 3x + 3 = 3x - 3x + 27 4x + 3 = 27

   Subtract '3' from both sides: 4x + 3 - 3 = 27 - 3 4x = 24

   Divide both sides by '4': (4x)/4 = 24/4 x = 6

   So, the solution is x = 6.

3. 3x - 7 = 2x + 3

   Subtract '2x' from both sides: 3x - 2x - 7 = 2x - 2x + 3 x - 7 = 3

   Add '7' to both sides: x - 7 + 7 = 3 + 7 x = 10

   So, the solution is x = 10.

4. 42 - x = 2x + 9

   Add 'x' to both sides: 42 - x + x = 2x + x + 9 42 = 3x + 9

   Subtract '9' from both sides: 42 - 9 = 3x + 9 - 9 33 = 3x

   Divide both sides by '3': (33)/3 = (3x)/3 x = 11

   So, the solution is x = 11.

5. 20 + 3x = 4 - x

   Add 'x' to both sides: 20 + 3x + x = 4 - x + x 20 + 4x = 4

   Subtract '20' from both sides: 20 + 4x - 20 = 4 - 20 4x = -16

   Divide both sides by '4': (4x)/4 = (-16)/4 x = -4

   So, the solution is x = -4.