Question

02. Resolver, sendo U = Q: a) 5x + 1 = 36 b) 2x – 8 = 8 c) 3x + 1 = 19 d) 7y – 4 = 10 e) 7x + 1 – 5x = 9 f) 16 – x = x + 25

Answer 1

Explicação passo-a-passo:

a)

5x + 1 = 36

5x = 36 - 1

5x = 35

x = 35/5

x = 7

b)

2x - 8 = 8

2x = 8 + 8

2x = 16

x = 16/2

x = 8

c)

3x + 1 = 19

3x = 19 - 1

3x = 18

x = 18/3

x = 6

d)

7y - 4 = 10

7y = 10 + 4

7y = 14

y = 14/7

y = 2

e)

7x + 1 - 5x = 9

2x = 9 - 1

2x = 8

x = 8/2

x = 4

f)

16 - x = x + 25

x + 25 = 16 - x

x + x = 16 - 25

2x = -9

x = -9/2

Answer 2

Oie, Td Bom?!

a)

$5x + 1 = 36$

$5x = 36 - 1$

$5x = 35$

$x = \frac{35}{5}$

$x = 7$

b)

$2x - 8 = 8$

$2x = 8 + 8$

$2x = 16$

$x = \frac{16}{2}$

$x = 8$

c)

$3x + 1 = 19$

$3x = 19 - 1$

$3x = 18$

$x = \frac{18}{3}$

$x = 6$

d)

$7y - 4 = 10$

$7y = 10 + 4$

$7y = 14$

$y = \frac{14}{7}$

$y = 2$

e)

$7x + 1 - 5x = 9$

$2x + 1 = 9$

$2x = 9 - 1$

$2x = 8$

$x = \frac{8}{2}$

$x = 4$

f)

$16 - x = x + 25$

$- x - x = 25 - 16$

$- 2x = 9$

$x = \frac{9}{ - 2}$

$x = - \frac{9}{2}$

Att. Makaveli1996