Question

determine o valor de x, para que se tornem equivalentes:

a) 2/3 = x/30

b)36/40 = x/20

c) x/5 = 9/45

d) 27/36 = x/4


ajuda ae gnt

Answer 1

a) 30.2=3.x
x=20
b) 36.20=40.x
x=18
c) 45.x=5.9
x=1
d) 27.4=36.x
x=3

Answer 2

a)
2/3 = x/30

3x = 30 .2

3x=   60

x= 60/3

x= 20

b) 36/40 = x/20

40x= 36.20
40x = 720

x= 720/40

x= 18

c)x/5 = 9/45

45x = 9.5

45x = 45

x= 45/45
x= 1

d) 27/36 = x/4

36x = 27.4

36x= 108

x= 108/36

x= 3