Qui peux m'aider svp ? 3+4(5x-2)=6x -1/3x-5/4=4/5x+1/5 Merci et bonne après-midi.

Salut,

3 + 4(5x-2) = 6x
<=> 3 + 20x - 8 = 6x
<=> -5 + 20x = 6x
<=> 20x - 6x = 5
<=> 14x = 5
<=> x = 5/14

-1/3x-5/4=4/5x+1/5
-4x - 15 = 48/5x + 12/5
-20x - 75 = 48x + 12
-20x - 48x = 12 + 75
-68x = 87
x = -87/68