Question

Qual o valor de x nas proporções:
A) 6=24
8 X
B)5=X
8 16
C)X=18
7 14
D)3=18
X 30

Answer 1

6=24
8=x

multiplica cruzando
6x= 24.8
6x= 192
x= 192/6
x= 32

B) 5=x
8=16

8x= 5.16
8x= 80
x= 10

C) x= 18
7= 14

14x= 18.7
14x= 126
x= 126/14
x= 9

D) 3=18
x= 30

18x= 30.3
18x= 90
x= 90/18
x= 5