Question

k)5x -5 + x = 9 + x
l)7x - 4-x= -2x + 8 - 3x
m)-X-5 + 4x = -7x + 6x + 15
n)3x - 2x = 3x + 2
o)2 - 4x = 32 - 18x + 12
p)2x - 1= -3 + x + 4
q)3x - 2 - 2x - 3=0
r)10- 9x + 2x = 2 - 3x
s)4x - 4 - 5x = -6 + 90
t)2 - 3x = -2x + 12 - 3x
PRECISO DAS CONTAS , PARA AMANHÃ
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Answer 1

Resposta:

Boa noite

K)5x-5+x=9+x

6x-x=9+5

5x=14

x=14/5

x=2.8

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

6x=-5x+8+4

6x-5x=12

x=12

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

3x-5=-x+15

3x+x=15-5

4x=10

x=10/4

x=2.5

N)3x-2x=3x+2

x=3x+2

-2=3x-x

-2=2x

2x=-2

x=-2/2

x=-1

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

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

14x=42

x=42/14

x=3

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

2x+2x=4+1

4x=5

x=5/4

x=1.25

q)3x-2-2x-3=0

x-5=0

x=5

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

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

8=4x

4x=8

x=8/4

x=2

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

-x=84+4

-x=88

x=-88

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

-3x+5x=12-2

2x=10

x=10/2

x=5

Answer 2

Resposta:

K)

5x - 5 + x = 9 + x

5x - 5 = 9

5x = 9 + 5

5x = 14

x = 14 ÷ 5

x = 14/5

L)

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

6x - 4 = - 5x + 8

6x + 5x = 8 + 4

11x = 12

x = 12 ÷ 11

x = 12/11

M)

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

3x - 5 = - x + 15

3x + x = 15 + 5

4x = 20

x = 20 ÷ 4

x = 5

N)

3x - 2x = 3x + 2

- 2x = 2

x = 2 ÷ (- 2)

x = - 2 ÷ 2

x = - 1

O)

2 - 4x = 32 - 18x + 12

2 - 4x = 44 - 18x

- 4x + 18x = 44 - 2

14x = 42

x = 42 ÷ 14

x = 3

P)

2x - 1 = - 3 + x + 4

2x - 1 = 1 + x

2x - x = 1 + 1

x = 2

Q)

3x - 2 - 2x - 3 = 0

x - 5 = 0

x = 5

R)

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

10 - 7x = 2 - 3x

- 7x + 3x = 2 - 10

- 4x = - 8

x = - 8 ÷ (- 4)

x = 8 ÷ 4

x = 2

S)

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

- x - 4 = 84

- x = 84 + 4

- x = 88

x = - 1 × 88

x = - 88

T)

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

2 = - 2x + 12

2x = 12 - 2

2x = 10

x = 10 ÷ 2

x = 5

Espero ter ajudado!!!