• Matéria: Matemática
  • Autor: cereja1786
  • Perguntado 7 anos atrás

A)2X-8=8. B)3X+1=19. C)9X+5=50+X-5. D)7x+1-5x=9. E)20x-13=20-9X. F)13X-27= -23+9X. G)6X-32= -20. H)6X+5=2+5X​

Respostas

respondido por: barbosadasilvaamanda
2

A) 2X - 8 = 8

2x = 8 + 8

2x = 16

x = 16/2

x = 8

B) 3X + 1 = 19

3x = 19 - 1

3x = 18

x = 18/3

x = 6

C) 9X + 5 = 50 + X - 5

9x - x = 50 - 5 - 5

8x = 50 - 10

8x = 40

x = 40/8

x = 5

D) 7x + 1 - 5x = 9

7x - 5x = 9 -1

2x = 8

x = 8/2

x = 4

E) 20x - 13 = 20 - 9X

20x + 9x = 20 + 13

29x = 33

x = 33/29

F) 13X - 27 = -23 + 9X

13x - 9x = -23 - 27

4x = - 50

x = -50/4

G) 6X - 32 = -20

6x = -20 + 32

6x = 12

x = 12/6

x = 2

H) 6X + 5 = 2 + 5X

6x - 5x = 2 - 5

x = - 3

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