Question

1)Resolva as equações

a) 6x = 2x + 16
b) 2x – 5 = x + 1
c) 2x + 3 = x + 4
d) 5x + 7 = 4x + 10
e) 4x – 10 = 2x + 2
f) 4x – 7 = 8x – 2
g) 2x + 1 = 4x – 7



2) Resolva as seguintes equações

a) 2x + 5 - 5x = -1
b) 5 + 6x = 5x + 2
c) x + 2x - 1 - 3 = x

COM CONTA

VALENDO 14 pontos​

Answer 1

Resposta:

1)

a) 6x = 2x + 16

6x-2x = 16

4x = 16

x = 16/4

x = 4

b) 2x – 5 = x + 1

2x-1x = 1+5

1x = 6

x = 6/1

x = 6

c) 2x + 3 = x + 4

2x-1x = 4-3

1x = 1

x = 1/1

x = 1

d) 5x + 7 = 4x + 10

5x-4x = 10-7

1x = 3

x = 3/1

x = 3

e) 4x – 10 = 2x + 2

4x-2x = 2+10

2x = 12

x = 12/2

x = 6

f) 4x – 7 = 8x – 2

4x-8x = -2+7

-4x = 5

x = 5/-4

x = -1,25

g) 2x + 1 = 4x – 7

2x-4x = -7+1

-2x = -6

x = -6/-2

x = 3

2)

2x + 5 - 5x = -1

2x-5x = -1-5

-3x = -6

x = -6/-3

x = 2

b) 5 + 6x = 5x + 2

6x-5x = 2-5

1x = -3

x = -3/1

x = -3

c) x + 2x - 1 - 3 = x

1x+2x-1x = 1+3

2x = 4

x = 4/2

x = 2

Se quiser confirmar é só substituir o valor do x.

Espero ter ajudado ;)