Rezolvați ecuatia:3 (2x-1)=4x+5 ,in Q

Răspuns :

3 ( 2 x - 1 ) = 4 x + 5

6 x - 3 - 4 x = 5

2 x = 5 + 3

2 x = 8

x = 8 / 2 ∈ Q

x = 4

3 (2x - 1 ) = 4x + 5

6x - 3 = 4x + 5

6x - 4x = 5 + 3

2x = 8

x = 4 ∈ Q