Question

ayuda es para mañana:( ​

Answer 1

Respuesta:

Listo espero te ayude.

Explicación paso a paso:

4x + 3 = 21 - 2x

4x + 2x = 21 - 3

6x = 18

x = 3

2(x + 1) - 3(x - 2) = x - 6

2x + 2 - 3x - 6 = x - 6

-x -4 = x - 6

-x + x = -6 + 4

-2

$\frac{2x - 3}{ 4} = \frac{-x + 3}{6}$

(2x - 3 )6 = (-x + 3)4

12x - 18 = -4x + 12

12x + 4x = 12 + 18

16x = 30

x = $\frac{30}{16}$

$\frac{2x}{3} + \frac{16}{3} = - \frac{4x}{2}$

$\frac{2x + 16}{1} = \frac{4x}{2}$

2(2x + 16) = 1(-4x)

4x + 32 = -4x

4x + 4x = 32

8x = 32

x = $\frac{32}{8}$

x = 4

$\frac{3x + 6 - 8x - 12}{36} = \frac{4 - 3x}{18}$

18(3x + 6 - 8x - 12) = 36( 4 - 3x)

54x + 108 - 144x - 216 = 144 - 108x

-90x - 108 = 144 - 108x

-90x + 108x = 144 + 108

18x = 252

x = 14

$\frac{5x - 3}{6} + \frac{x - 5}{18} = \frac{x + 1}{3}$

$\frac{15x - 9 + x - 5}{18} = \frac{x + 1}{3}$

3(15x - 9 + x - 5) = 18(x + 1)

45x - 27 + 3x - 15 = 18x + 18

48x -42 = 18x + 18

48x - 18x = 18 + 42

30x = 60

x = $\frac{60}{30}$

x = 2