Question

Resolva as seguintes equações:

a) 3x = 30
b) 5x = 35
c) –6x = 42
d) 2x = 30
e) –9x = –18
f) 3x = –33
g) 4x = 20
h) 11x = 0
i) –2x = 28
j) 15x = –45
k) –8x = –32
l) –5x = 0​

Answer 1

Resposta:

Explicação passo-a-passo:

a) 3x = 30

x = 30/3

x = 10

_____________

b) 5x = 35

x = 35/5

x = 7

---------------

c) –6x = 42 (-1)

6x = - 42

x = - 42/6

x = - 7

-------------

d) 2x = 30

x = 30/2

x = 15

-----------

e) –9x = –18 (-1)

9x = 18

x = 18/9

x = 2

___________

f) 3x = –33

x = - 33/3

x = - 11

_________

g) 4x = 20

x = 20/4

x = 5

__________

h) 11x = 0

x = 0/11

x = 0

_______

i) –2x = 28

2x = - 28

x = -28/2

x = - 14

___________

j) 15x = –45

x = - 45/15

x = - 3

-------------

k) –8x = –32 (-1)

8x = 32

x = 32/8

x = 4

----------------

l) –5x = 0​

5x = 0

x = 0/5

x = 0