Question

me ajuda por favor não entendi tô precisando de muita ajuda​

Answer 1

Resposta:

a) 2x + 5 - 5x = - 1

2x - 5x = -1 -5

-3x = -6

x = 6/3

x = 2

b) 5 + 6x = 5x + 2

6x - 5x = 2 - 5

x = -3

c) x + 2x - 1 - 3 = x

x + 2x - x = 1 + 3

2x = 4

x = 4/2

x = 2

d) -3x + 10 = 2x + 8 + 1

-3x -2x = 8 + 1 - 10

-5x = -1

x = 1/5

x = 0,2

e) 5x - 5 + x = 9 + x

5x + x - x = 9 + 5

5x = 14

x = 14/5

f) 7x - 4 - x = -2x + 8 -3x

7x + 2x + 3x = 8 + 4

12x = 12

x = 12/12

x = 1

g) -x - 5 + 4x = -7x + 6x + 15

-x + 4x + 7x - 6x = 15 + 5

-2x = 20

x = -20/2

x = -10

h) 3x - 2x = 3x + 2

3x - 2x - 3x = 2

-2x = 2

x = -2/2

x = -1

i) 2 - 4x = 32 - 18x + 12

-4x + 18x = 32 + 12 - 2

14x = 42

x = 42/14

x = 3

j) 2x - 1 = -3 + x + 4

2x - x = -3 + 4 + 1

x = -2

k) 3x - 2 -2x - 3 = 0

3x - 2x = 2 + 3

x = 5

l) 10 - 9x + 2x = 2 - 3x

-9x + 2x + 3x = 2 - 10

-4x = -8

x = 8/4

x = 2

m) 4x - 4 -5x = -6 + 90

4x -5x = -6 + 90 + 4

-x = -82

x = 82

n) 2 - 3x = -2 x + 12 - 3x

-3x + 2x + 3x = 12 - 2

-2x = 10

x = -10/2

x = -5