Question

Determine o valor de x em cada caso ​

Answer 1

a) x • 10 = 4 • 5

10x = 20

x = 10

b) x • 14 = 7 • 4

14x = 28

x = 2

c) 2x • 14 = 7 • 4

28x = 28

x = 1

d) 8 • 20 = 4 • x

4x = 160

x = 40

e) 8 • 14 = 4 • 2x

8x = 112

x = 14