Question

pela mooooooooor de deus alguém?????​

Answer 1

a)

x + 4 = 15

x = 15 - 4

x = 11

b)

2x - 5 = x + 10

2x - x = 10 + 5

x = 15

c)

5x - 3x - 8 = - 29 + 9x

2x - 9x = - 29 + 8

- 7x ←=→ -21

21/7

x = 3

d)

3 + x = 0

x = 0 - 3

x = -3

e)

23x + 2 = 2

*x= 2 - 2

23x = 0

x = 0/23

x = 0

f)

12 - 7 + 4x = 25

5 + 4x = 25

4x = 25 - 5

4x = 20

20/4

x = 5

g)

5x - 3x = 30

2x = 30

30/2

x = 15