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A) 3(2x - 2) = 2(3x + 9) B) 3(4x + 7) = 4x - 25 C) 7x + 15 = 3(3x - 7)?

A) 3(2x - 2) = 2(3x + 9) B) 3(4x + 7) = 4x - 25 C) 7x + 15 = 3(3x - 7).

En resumen

Resolvemos. A ) 3(2x - 2) = 2 6x - 6 = 2 6x = 8 x = 4 / 3 B) 3(4x + 7) = 4x - 25 12x + 21 = 4x - 25 8x = - 46 x = - 23 / 4 C) 7x + 15 = 3(3x - 7) 7x + 15 = 9x - 21 36 = 2x 18 = x.

Mejor respuesta

Cricrilokita
8

Resolvemos.

A )

3(2x - 2) = 2

6x - 6 = 2

6x = 8 x = 4 / 3

B)

3(4x + 7) = 4x - 25

12x + 21 = 4x - 25

8x = - 46 x = - 23 / 4

C)

7x + 15 = 3(3x - 7)

7x + 15 = 9x - 21

36 = 2x

18 = x.