Question

ecuaciones de primer grado
a) 2x-18=0
b)8x -16=10
c)9x-2+3=4x-8x-8
d)5(4-x)-(2-6x)=5(9x-8)​

Answer 1

Respuesta:

$2x - 18 = 0 \\ 2x = 18 \\ x = \frac{18}{2} \\ x = 9$

$8x - 16 = 10 \\ 8x = 10 + 16 \\ 8x = 26 \\ x = \frac{26}{8} = \frac{13}{4}$

$9x - 2 + 3 = 4x - 8x - 8 \\ 9x + 1 = - 4x - 8 \\ 9x + 4x = - 8 - 1 \\ 13x = - 9 \\ x = - \frac{9}{13}$

5(4 - x) - (2 - 6x) = 5(9x - 8)

20 - 5x - 2 + 6x = 45x - 40

18 + 1x = 45x - 40

18 + 40 = 45x - 1x

58 = 44x

58/44 = x

29/22 = x