Question

7 Resuelve las siguientes ecuaciones
3x − 6 = 2x + 21
6. (7 − x) = 8. (6 − x)
2x + 4 − 2 . 5 = 2. (3x − 1)
0,5 . 7 + 2x = √26/5 . 13/10

Answer 1

Explicación paso a paso:

3x - 6 = 2x + 21

3x - 2x = 21 + 6

x = 27

6 . (7 - x ) = 8 . ( 6 - x )

42 - 6x = 48 - 8x

- 6x + 8x = 48 - 42

2 x = 6

x = 3

2x + 4 - 2 x 5 = 2 x ( 3x - 1 )

2 x + 4 - 10x = 6x - 2

- 8x - 6 x = - 2 - 4

- 14x = - 6

x = 3

7