Question

Calcular x, nas seguintes proporções:

a) 35/25 = 30/x

b) 2x/15 = 6/9

c) 2x/3 = 8/6

d) 6/7 = 3x/28

e) x/6 = 5/10

f) x/8 = 15/24​

Answer 1

Resposta:

a)

35/25 = 30/x

35x = 750

x = 750/35

b)

2x/15 = 6/9

18x = 90

x = 90/18

x = 5

c)

2x/3 = 8/6

12x = 24

x = 24/12

x = 2

d)

6/7 = 3x/28

168 = 21x

x = 168/21

x = 8

e)

x/6 = 5/10

10x = 30

x = 30/10

x = 3

f)

x/8 = 15/24

24x = 120

x = 120/24

x = 5