Question

a) 5 x + 6 = – 4
b) 3 x + 26 = – 1
c) 4 x – 8 – 2 x = x – 2
d) 10 x – 8 – 2 = 7 x – 4
e) 2 x + 5 – 5 x = – 1
f) 4 x – 4 – 5 x = – 6 + 90
g) – 3 x + 10 = 2 x + 8 + 1
h) 3 x – 4 = 11
i) 4 x + 6 = 12 – 2 x
j) x – 10 – 8 = 2 x + 4
k) 5 x + 4 x – 10 = 2 x – 2
l) 10 – 9 x + 2 x = 2 – 3 x
m) x + 2 x – 1 – 3 = x
n) – 10 + 4 – 2 x = – 4 x – 7
o) 2 – 4 x = 32 – 18 x + 12
p) 2 x + 3 = 9
q) 3 x + 7 = x + 3
r) – 7 x + 4 + 10 x = 4 – 2 x
s) 5 + 6 x = 5 x + 2
t) 2 – 3 x = – 2 x + 12 – 3 x
u) 7 x – 4 – x = – 2 x + 8 – 3 x
v) 2.( x + 1 ) – ( x – 1 ) = 0
w) – 2 ( n – 3 ) – ( 3 – n ) = 8
x) 7.( m + 2 ) – ( m – 3 ) = – (2 m)
y) 13 + 4.( 2 x – 1 ) = 5.( x + 2 )
(não tem letra z)

Answer 1

Resposta:

Explicação passo-a-passo:

A) 5 x + 6 = – 4

5x = - 4 - 6

5x = - 10

x = -10/5

X = - 2

________

b) 3 x + 26 = – 1

3x = - 1 - 26

3x = - 27

x = - 27/3

x = - 9

_________

c) 4 x – 8 – 2 x = x – 2

2x - 8 = x - 2

2x - x = - 2 + 8

x = 6

________

d) 10 x – 8 – 2 = 7 x – 4

10x - 10 = 7x - 4

10x - 7x = - 4 + 10

3x = 6

x = 6/3

x = 2

______

e) 2 x + 5 – 5 x = – 1

- 3x = - 1 - 5

- 3x = - 6 (-1)

3x = 6

x = 6/3

X = 2

_______

f) 4 x – 4 – 5 x = – 6 + 90

- x - 4 = 84

- 4 - 84 = x

- 88 = x

x = - 88

__________

g) – 3 x + 10 = 2 x + 8 + 1

- 3x - 2x = 9 - 10

- 5x = - 1 (-1)

5x = 1

x = 1/5

________

h) 3 x – 4 = 11

3x = 11+4

3x = 15

x = 15/3

x = 5

_______

i) 4 x + 6 = 12 – 2 x

4x + 2x = 12-6

6x = 6

X = 6/6

x = 1

_______

j) x – 10 – 8 = 2 x + 4

x - 18 = 2x + 4

- 18 - 4 = 2x - x

- 22 = x

x = - 22

_________

k) 5 x + 4 x – 10 = 2 x – 2

9x - 2x = - 2 + 10

7x = 8

X = 8/7

_______

l) 10 – 9 x + 2 x = 2 – 3 x

10 - 7x = 2 - 3x

10 - 2 = - 3x + 7x

8 = 4x

4x = 8 (:4)

X = 2

__________

m) x + 2 x – 1 – 3 = x

3x - 4 = x

3x - x = 4

2x = 4

x = 4/2

X = 2

________

n) – 10 + 4 – 2 x = – 4 x – 7

- 6 - 2x = - 4x - 7

4x - 2x = - 7 + 6

2x = - 1

x = - 1/2

_________

o) 2 – 4 x = 32 – 18 x + 12

2 - 4x = 44 - 18x

18x- 4x = 44 - 2

14x = 42

x = 42/14

x = 3

___________

p) 2 x + 3 = 9

2x = 9-3

2x = 6

x = 6/2

x = 3

_______

q) 3 x + 7 = x + 3

3x - x = 3 - 7

2x = - 4

X = - 4/2

X = - 2

-----------

r) – 7 x + 4 + 10 x = 4 – 2 x

3x + 4 = 4 - 2x

3x + 2x = 4-4

5x = 0

x = 0/5

x = 0

-----------

s) 5 + 6 x = 5 x + 2

6x - 5x = 2 - 5

x = - 3

_________

t) 2 – 3 x = – 2 x + 12 – 3 x

2 - 3x = - 5x + 12

5x - 3x = 12 - 2

2x = 10

x = 10/2

x = 5

---------

u) 7 x – 4 – x = – 2 x + 8 – 3 x

6x - 4 = - 5x + 8

6x +5x = 8+4

11x = 12

x = 12/11

__________

v) 2.( x + 1 ) – ( x – 1 ) = 0

2x + 2 - x + 1 = 0

X + 3 = 0

x = - 3

_______

w)

– 2 ( n – 3 ) – ( 3 – n ) = 8

- 2n + 6 - 3 + n = 8

- n + 3 = 8

3 - 8 = n

- 5 = n

n = - 5

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

x)

7.( m + 2 ) – ( m – 3 ) = – (2 m)

7m + 14 - m + 3 = - 2m

6m + 17 = - 2m

6m + 2m = - 17

8m = - 17

m = - 17/8

___________

y) 13 + 4.( 2 x – 1 ) = 5.( x + 2 )

13+8x - 4 = 5x + 10

9 + 8x = 5x + 10

8x - 5x = 10 - 9

3x = 1

x = 1/3