Sagot :
bonjour
5 x - 3 = 7 + x
5 x - x = 7 + 3
4 x = 10
x = 10/4 = 5 /2
2 y + 4 = - 6 - 4 y
2 y + 4 y = - 6 - 4
6 y = - 10
y = - 5/3
4 t - 6 = 4 - 4 t
4 t + 4 t = 4 + 6
8 t = 10
t = 5 /4
( 4 - 2 x ) ( 3 x + 12 ) = 0
soit
4 - 2 x = 0 et x = 2
soit 3 x + 12 = 0 et x = - 4
Réponse :
Bonjour
Explications étape par étape
5 x - 3 = 7 + x
5x -x = +3 +7
4x = 10
x = 10/4 = 5/2
2y + 4 = - 6 - 4y
2y +4y = -4 -6
6y = -10
y = -10/6 = -5/3
4t - 6 = 4 - 4t
4t +4t = +6 +4
8t = 10
t = 10/8 = 5/4
(4 - 2 x )( 3x + 12) = 0
4 -2x = 0
-2x = -4
x = +4/2 = 2
puis 3x +12 = 0
3x = -12
x = -12/3 = -4