Question

inventen un problema para cada una de las ecuaciones ​

Answer 1

Verified answer

Respuesta:

a. 9

b. 0.1

c. - 2

d. 3

Explicación paso a paso:

a.

2x - 4 = 14

2x = 14 + 4

2x = 18

x = 18 / 2

x = 9

b.

- 18x + 2 = 2x

- 18x - 2x = - 2

- 20x = - 2

20x = 2

x = 2 / 20

x = 1 / 10

x = 0.1

c.

13 + 14x = - 15

14x = - 13 - 15

14x = - 28

x = - 28 / 14

x = - 2

d.

2 . ( x - 1 ) = 4

x - 1 = 4 / 2

x - 1 = 2

x = 2 + 1

x = 3