Question

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
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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

7x - 5x = 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

x = -4,5