Question

Resolver y verificar las siguientes ecuaciones (mucho cuidado con los signos). a) 4x + 10 = 12 + 2x b) 9x + 2 = 20 + 3x c) 4x - 16 = 3x - 2.3 d) 5x - 20:4 = 3x +1

Answer 1

Respuesta:

a) x = 1

b) x = 3

c) x = 13.7

d)x = 3

Explicación paso a paso:

a) 4x + 10 = 12 + 2x

   4x-2x = 12 - 10

   2x = 2

    x= 1

b) 9x + 2 = 20 + 3x

   9x-3x = 20-2

   6x = 18

   x = 3

c) 4x - 16 = 3x - 2.3

    4x - 3x= -2.3 + 16

    x  = 13.7

d) 5x - 20:4 = 3x +1

   5x - 3x = 1 + (20:4)

  2x = 1 + 5

  x = 6:2

  x = 3

Answer 2

Respuesta:

a) x=1

b) x = 3

c) x = 10

d) x = 3

Explicación paso a paso:

a) 4x + 10 = 12 + 2x

4x - 2x = 12 - 10

2x = 2

x = 2/2

x = 1

b) 9x + 2 = 20 + 3x

9x - 3x = 20 -2

6x = 18

x = 18/6

x = 3

c) 4x - 16 = 3x - 2.3

4x - 16= 3x - 6

4x - 3x = -6 + 16

x = 10

d) 5x - 20:4 = 3x +1

5x - 5 = 3x + 1

5x - 3x = 1 + 5

2x = 6

x = 6/2

x = 3