MatemáticasBásico1 respuestas

7 - [8x - 3(x + 3)] = 5x - (4 - 2x)?

7 - [8x - 3(x + 3)] = 5x - (4 - 2x).

En resumen

7 - [8x - 3(x + 3)] = 5x - (4 - 2x) 7 - [8x - 3x - 9] = 5x - 4 + 2x 7 - [5x - 9] = 7x - 4 7 - 5x + 9 = 7x - 4 16 + 4 = 7x + 5x 20 = 12x x = 20 / 12 x = 5 / 3.

Mejor respuesta

Camiloortegon
2

7 - [8x - 3(x + 3)] = 5x - (4 - 2x)

7 - [8x - 3x - 9] = 5x - 4 + 2x

7 - [5x - 9] = 7x - 4

7 - 5x + 9 = 7x - 4

16 + 4 = 7x + 5x

20 = 12x

x = 20 / 12

x = 5 / 3.