Question

resuelve las siguientes ecuaciones
a) 2. ( x- 4) = × + 7

b) 7. (×- 1 ) = 3x + 1

c) ( x + 2) . 6 = 2 . ( 10 + x)

d) ( 35x - 50) : 5 = 2x + 15​

Answer 1

Respuesta:

a) sin solución

b) x = - 1

c) x = 2

d) x = 5

Explicación paso a paso:

x - 4 = x + 7

x - 4 + 4 = x + 7 + 4

x = x + 11

x - x = 11

0 = 11

No hay solución

x - 1 = 3x + 1

x - 1 + 1 = 3x + 2

x = 3x + 2

x - 3x = 2

- 2x = 2

x = 2 / - 2

x = - 1

6(x + 2) = 2(10 + x)

6x + 12 = 20 + 2x

6x + 12 - 12 = 20 + 2x - 12

6x = 8 + 2x

6x - 2x = 8

4x = 8

x = 8 / 4

x = 2

(35x - 50) / 5 = 2x + 15

7x - 10 = 2x + 15

7x - 10 + 10 = 2x + 15 + 10

7x = 2x + 25

7x - 2x = 25

5x = 25

x = 25 / 5

x = 5

Espero haberte ayudado