Question

URGENTEE:
calcule o valor de x nas equações:

1. 3x + 2 = x + 1
2. 5x + 3 = 2 + x
3. 6x + 3 = 4x + 5
4. 8x - x + 2x + x = 10
5. x + (x + 4) = 10

Answer 1

1. 3x + 2 = x + 1

3x - x = 1 - 2

2x = -1

x =-1/2

2. 5x + 3 = 2 + x

5x -x = 2 -  3

4x = -1

x = -1/4

3. 6x + 3 = 4x + 5

6x - 4x = 5 -3

2x = 2

x = 1

4. 8x - x + 2x + x =10

7x + 3x = 10

10x = 10

x = 1

5. x + ( x + 4) = 10

x + x + 4 = 10

2x = 10 -4

x = 8/2

x = 4

Answer 2

OLá.

a)

3x + 2 = x + 1

3x - x = 1 - 2

2x = - 1

x = - 1/2

b)

5x + 3 = 2 + x

5x - x = 2 - 3

4x = - 1

x = 1/4

c)

6x + 3 = 4x + 5

6x - 4x = 5 - 3

2x = 2

x = 2/2

x = 1

d)

8x - x + 2x + x = 10

10x = 10

x = 10/10

x = 1

e)

x + (x + 4) = 10

x + x + 4 = 10

2x = 10 - 4

2x = 6

x = 6/2

x = 3

Espero ter ajudado.