Question

2-determine o valor de x nas proporções:​

Answer 1

A) 15x = 30 × 4

15x = 120

x = 8

B) 5x = 3 × 10

5x = 30

x = 6

C) 3x = 9 × 1

3x = 9

x = 3

D) 5x = 1 × 15

5x = 15

x = 3

E) x = 3 × 9

x = 27

F) y = 15 × 2

y = 30

G) 3y = 5 × 6

3y = 30

y = 10

H) 7a = 14 × 8

7a = 112

a = 16