Question

Va rog problema 8 dau coroana​

Answer 1

Răspuns:

Explicație pas cu pas:

a)

5x - 2 = 2x + 7

5x - 2x = 7 + 2

3x = 9

x = 3

_____________

b)

3x + 5 = 4x - 8

4x - 3x = 5 + 8

x = 13

_____________

c)

6 - 2x = -7x + 21

7x - 2x = 21 - 6

5x = 15

x = 3

_____________

d)

-4x + 5 = 4x - 27

4x + 4x = 5 + 27

8x = 32

x = 4

______________

e)

-2x + 5 = -3x + 4

3x - 2x = 4 - 5

x = -1

_____________

f)

-8 - 14x = 2x - 8

14x + 2x = -8 + 8

16x = 0

x = 0