Question

ayuda es para mañana ​

Answer 1

Explicación paso a paso:

9)

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

4x+4+2x+4 = x+3

6x + 8 = x+3

5x = -5

x = -1

10)

(4x-4+3x-6)/12 = (x-3)/6

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

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

7x - 10 = 2x-6

5x = 4

x = 4/5

11)

9/3 + (x+1)/3 = (x+1)/6

9+x+1 = (x+1)/2

18+2x+2 = x+1

x = -19

12)

todo por 6

12 + 18-6x + 2x-2 = (3x+3)/2

18-4x = (3x+3)/2

36 - 8x = 3x+3

33 = 11x

3 = x