Question

URGENTE, RAPIDO

a) 6x = 4x + 16
b) 2x – 4 = x + 2
c) 3x + 3 = x + 7
d) 5x + 7 = 3x + 15
e) 4x – 10 = x + 2
f) x + 2x + 3 – 5x = 4x – 9
g) x + x – 4 = 17 – 2x + 1
h) 5x + 6x – 16 = 3x + 2x - 4
i) 5x + 4 = 3x – 2x + 4
j) 4(x + 3) =1
k) 5(2x -4) = 7 ( x + 1) – 3

COM CONTAS

Answer 1

Resposta:

a) 8

b) 6

c) 1

d) 4

e) 4

f) 2

g) 5,5

h) 2

i) 0

j) 2,75

k) 5,6

Explicação passo-a-passo:

a) 6x = 4x + 16

6x - 4x = 16

2x = 16

x = 16÷2

x = 8

b) 2x – 4 = x + 2

2x - x = 2 + 4

x = 6

c) 3x + 3 = x + 7

3x + x = 7 - 3

4x = 4

x = 4 ÷ 4

x = 1

d) 5x + 7 = 3x + 15

5x - 3x = 15 - 7

2x = 8

x = 8 ÷ 2

x = 4

e) 4x – 10 = x + 2

4x - x = 2 + 10

3x = 12

x = 12 ÷ 3

x = 4

f) x + 2x + 3 – 5x = 4x – 9

x + 2x - 5x - 4x = -9 - 3

-6x = -12 af

6x = 12

x = 12 ÷ 6

x = 2

g) x + x – 4 = 17 – 2x + 1

x + x + 2x = 17 + 1 + 4

4x = 22

x = 22 ÷ 4

x = 5,5

h) 5x + 6x – 16 = 3x + 2x - 4

5x + 6x - 3x - 2x = 16 - 4

6x = 12

x = 12 ÷ 6

x = 2

i) 5x + 4 = 3x – 2x + 4

5x - 3x + 2x = 4 - 4

4x = 0

x = 0 ÷ 4

x = 0

j) 4(x + 3) =1

4x + 12 = 1

4x = 1 - 12

4x = -11

x = -11 ÷ 4

x = -2,75

k) 5(2x -4) = 7 ( x + 1) – 3

10x - 20 = 7x + 7 - 3

10x - 7x = 20 - 3

3x = 17

x = 17 ÷ 3

x = 5,6