Question

resolva as resoluçoes de equação
1°grau

d)-3x+10=2x+8+1

e)5x-5+x=9+x

f)7x-4-x=-7x+6x+15

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

h)3x-2x=32-18x+12

i)2-4x=32-18x+12
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Answer 1

Resposta:

d) x = 0,2

e) x = 2,8

f) x = 19/7

g) x = 5

h) x = 44/19

i) x = 3

Explicação passo-a-passo:

$d) - 3x + 10 = 2x + 8 + 1 \\ - 3x - 2x = 8 + 1 - 10 \\ - 5x = - 1 \\ x = - 1/ - 5 \\ x = 0,2 \\ \\ e)5x - 5 + x = 9 + x \\ 5x + x - x = 9 + 5 \\ 5x = 14 \\ x = 14/5 \\ x = 2,8$

$f)7x - 4 - x = - 7x + 6x + 15 \\ 7x - x + 7x - 6x = 15 + 4 \\ 7x = 19 \\ x = 19/7 \\ \\ g) - x - 5 + 4x = - 7x + 6x + 15 \\ - x + 4x + 7x - 6x = 15 + 5 \\ 4x = 20 \\ x = 20/4 \\ x = 5$

$h)3x - 2x = 32 - 18x + 12 \\ 3x - 2x + 18x = 32 + 12 \\ 19x = 44 \\ x = 44/19$

$i)2 - 4x = 32 - 18x + 12 \\ - 4x + 18x = 32 + 12 - 2 \\ 14x = 42 \\ x = 42/14 \\ x = 3$

Answer 2

Oie, Td Bom?!

d)

- 3x + 10 = 2x + 8 + 1

- 3x + 10 = 2x + 9

- 3x - 2x = 9 - 10

- 5x = - 1

x = 1/5

e)

5x - 5 + x = 9 + x

5x - 5 = 9

5x = 9 + 5

5x = 14

x = 14/5

f)

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

6x - 4 = - x + 15

6x + x = 15 + 4

7x = 19

x = 19/7

g)

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

3x - 5 = - x + 15

3x + x = 15 + 5

4x = 20

x = 20/4

x = 5

h)

3x - 2x = 32 - 18x + 12

x = 44 - 18x

x + 18x = 44

19x = 44

x = 44/19

i)

2 - 4x = 32 - 18x + 12

2 - 4x = 44 - 18x

- 4x + 18x = 44 - 2

14x = 42

x = 42/14

x = 3

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