Question

8. 8x - 4 + 3x = 7x + x + 14
9. 8x + 9 - 12x = 4x - 13 - 5x
10. 5y + 6y -- 81 = 7y + 102 + 65y
11. 16 + 7x - 5 + x = 11x - 3-X
12. 3x + 101 - 4x - 33 = 108 - 16x - 100
13. 14 - 12x +39x - 18x = 256 - 60x - 657x
14. 8x - 15x - 30x-51x = 53x + 31x-172​

Answer 1

Respuesta:

8. 11x-4 = 8x +14

11x - 8x = 14 + 4

3x = 18

x = 18/3 entonces x = 6

9. 8x + 9 - 12x = 4x - 13 - 5x

-4x + 9 = - x - 13

-4x + x = - 13 - 9

-3x = - 22

x = 22/3

10. 5y + 6y -- 81 = 7y + 102 + 65y

11y - 81 = 72y + 102

11y - 72y = 102 + 81

-61y = 183

Y = - 183/61 = - 3

11. 6 + 7x - 5 + x = 11x - 3-x

8x + 1 = 10x - 3

8x - 10x = - 3 - 1

-2x = - 4

x = - 4/-2 = 2

12. 3x + 101 - 4x - 33 = 108 - 16x - 100

-x + 68 = 8 - 16x

-x + 16x = 8 - 68

15x = - 60

x = - 60/15 = - 4

13. 14 - 12x +39x - 18x = 256 - 60x - 657x

14 + 9x = 256 - 717x

9x + 717x = 256 - 14

726x = 242

x = 242/726 simplificando x = 1/3

14. 8x - 15x - 30x-51x = 53x + 31x-172

-88x = 84x - 172

-88x-84x = - 172

-172x = - 172

x = - 172/-172

x = 1