Question

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RESOLVA AS QUESTÃO ABAIXO ⬇️

Answer 1

Boa noite

6)

5a + 5 = 20

5a = 20 - 5

5a = 15

a = 15 ÷ 5

a = 3

m + 8 = 20

m = 20 - 8

m = 12

10 + 8x = 50

8x = 50 - 10

8x = 40

x = 40 ÷ 8

x = 5

x + 8 + 3x = 24

x + 3x = 24 - 8

4x = 16

x = 16 ÷ 4

x = 4

y - 8 = - 12

y = - 12 + 8

y = - 4

3k - 2 = 25

3k = 25 + 2

3k = 27

k = 27 ÷ 3

k = 9

3x + 8 - x = 10

2x + 8 = 10

2x = 10 - 8

2x = 2

x = 2 ÷ 2

x = 1

3y + 5 = 12 - y

3y + 5 + y = 12

3y + y = 12 - 5

4y = 7

y = 7 ÷ 4

$y = \frac{7}{4}$

5b + 20 = - 45 + 10

5b + 20 = - 35

5b = - 35 - 20

5b = - 55

b = - 55 ÷ 5

b = - 11

2 (2x + 1) - (x + 1) = 5x + 16

4x + 2 - (x + 1) = 5x + 16

4x + 2 - x - 1 = 5x + 16

3x + 2 - 1 = 5x + 16

3x + 1 = 5x + 16

3x - 5x = 16 - 1

- 2x = 15

$x = - \frac{15}{2}$

7)

$\frac{2x}{7} - \frac{x}{14} = \frac{1}{2}$

$14( \frac{2x}{7} - \frac{x}{14} ) = 14 \times \frac{1}{2}$

$14 \times \frac{2x}{7} - 14 \times \frac{x}{14} = 14 \times \frac{1}{2}$

$14 \times \frac{2x}{7} - 14 \times \frac{x}{14} = 7$

$2 \times 2x - 14 \times \frac{x}{14} = 7$

2 × 2x - x = 7

4x - x = 7

3x = 7

$x = \frac{7}{3}$

Espero ter ajudado ☆ ✅