Question

a solucao da equacao x+2,2x=x/2+5,4 é? a)2 b)-2 c)20 d)-20

Answer 1

Ola Nathy 

x + 2.2x = x/2 + 5.4 

2x + 4.4x = x + 10.8 

2x + 4.4x - x = 10.8

5.4x = 10.8 

x = 10.8/5.4 = 2 (A) 

Answer 2

x + 2.2x = x/2 + 5.4  

2x + 4.4x = x + 10.8  

2x + 4.4x - x = 10.8

5.4x = 10.8  

x = 10.8/5.4 = 2 (A)