Question

necesito ayuda chiquess​

Answer 1

Explicación paso a paso:

a/

$2x + 13 = - 15$

$2x = - 15 - 13$

$2x = - 28$

$x = - 14$

b/

$7x + 8 = 64$

$7x = 64 - 8$

$7x = 56$

$x = 8$

c/

$20 = 3x - 5 \times ( - 4)$

$20 = 3x + 20$

$3x = 20 - 20$

$3x = 0$

$x = 0$

d/

$x + 3x + 5 = - 3 \times 5$

$4x + 5 = - 15$

$4x = - 15 - 5$

$4x = - 20$

$x = - 5$

e/

$3 \times 4 - 5 \times 6 = 2x + 7x$

$12 - 30 = 9x$

$- 18 = 9x$

$x = 2$

F/

$x + 3 - 7x = - 40 + 7$

$- 6x + 3 = - 33$

$- 6x = - 36$

$x = 6$

g/

$9 - 3x + 2x = 4x + 39$

$9 - 5x = 4x + 39$

-5x -4x =39-9

x= -3,3

h/

$3x - 6 = ( - 9x) \div 3 + 12$

$3x - 6 = - 3x + 12$

$x = 3$

i /

$3x - 5x + 2 \times 5 = - x - x - 10$

$- 2x + 10 = - 2x - 10$

$x = - 20$

k/

$- 2x + 6x - 8 = - 36 \div 4 + 8x - 7$

$4x - 8 = - 9 + 8x - 7$

$x = 2$

L/

$- 4x + 2x - 7 = - x + 14 + 2x - 54 \div ( - 9)$

$- 2x - 7 = x + 14 + 6$

$x = - 9$

m/

$2x - ( - 3 + 9 - 1) + 2 = x - ( - 3)$

$2x - 5 + 2 = x + 3$

$x = 6$

n/

$5x - ( - 3) + ( - 9) = 4x - ( - 7 + 1)$

$5x + 3 - 9 = 4x + 6$

$5x - 4x = 6 - 3 + 9$

$x = 12$

espero te sirva saludos está todo completo