Répondre :
Bonjour;
2/3x + 4/5x - 8 = 0
2/3x +4/5x = 8
2/3x*5/5 +4/5x *3/3 =8
10/15x +12/15x = 8
22/15x = 8
15x = 8/22
x= (8/22)/ 15
x = 8/22 *1/15
x = 8/330= 4/165
Bonjour;
2/3x + 4/5x - 8 = 0
2/3x +4/5x = 8
2/3x*5/5 +4/5x *3/3 =8
10/15x +12/15x = 8
22/15x = 8
15x = 8/22
x= (8/22)/ 15
x = 8/22 *1/15
x = 8/330= 4/165