MatemáticasBásico2 respuestas

URGENTE¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡1?

URGENTE¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ 1. 10(t - 9) - 9(5 - 6t) = 2(4t - 1) + 5 + 10t 2. 3n - 1 - (n - 4) - [2(n - 3) - 3(1 - 2n)] = - n - 2 3. X / 2 - x = x / 4 - 9.

En resumen

1. 10t - 90 - 45 + 54t = 8t - 2 + 5 + 10t 64t - 135 = 18t + 3 64t - 18t = 135 + 3 46t = 138 t = 138 / 46 t = 3 2.

Mejor respuesta

4

1. 10t - 90 - 45 + 54t = 8t - 2 + 5 + 10t

64t - 135 = 18t + 3

64t - 18t = 135 + 3

46t = 138

t = 138 / 46

t = 3

2.

3n - 1 - (n - 4) - [2n - 6 - 3 + 6n] = - n - 2

3n - 1 - n + 4 - 2n + 6 + 3 - 6n = n - 2 - 6n + 12 = - n - 2 - 6n + n = - 2 - 12 - 5n = - 14

n = - 14 / - 5

n = 14 / 5

3.

X - 2x / 2 = x - 36 / 4 - x / 2 = x - 36 / 4

4( - x) = 2(x - 36) - 4x = 2x - 72 - 4x - 2x = - 72 - 6x = - 72

x = - 72 / - 6

x = 12.

Otras 1 respuestas

Respuesta 2

IMar772
0

1. -

10(t - 9) - 9(5 - 6t) = 2(4t - 1) + 5 + 10t

(10t - 90) - (45 - 54t) = (8t - 2) + 5 + 10t

10t - 90 - 45 + 54t = 8t - 2 + 5 10t

64t - 135 = 18t + 3

46t = 138

t = 138 / 46

t = 3

2.

-

3n - 1 - (n - 4) - [2(n - 3) - 3(1 - 2n)] = - n - 2

3n - 1 - (n - 4) - [(2n - 6) - (3 - 6n)] = - n - 2

3n - 1 - n + 4 - 8n + 9 = - n - 2 - 6n + 12 = - n - 2

14 = 5 n

14 / 5 = n

2.

8 = n

c.

-

x / 2 - x = x / 4 - 9

x / 2 - x = x / - 5 - - - > amplificamos ambos lados por 10

10x / 2 - 10x = 10x / - 5

5x - 10x = - 2x

7x - 10x = 0 - 3x = 0

x = 0

saludos : ).