RESOUDRE LES EQUATIONS SUIVNATES : 5x +1 = -13 - 2x -2(u-3) + 5u -4 = 8 - 2(u-2) (-3x -2/5) (-3x +4) = 0

Bonjour, isolation du x et des nombres de chaque côté oblige.
5x +1 = -13 - 2x
5x+2x=-13-1
7x = -14
x=-14/7 = -2

-2(u-3) + 5u -4 = 8 - 2(u-2)
-2u+6+5u-4 = 8-2u+4
3u+2 = -2u+12
3u+2u = 12-2
5u = 10
u = 10/5 = 2

(-3x -2/5) (-3x +4) = 0
-3x -2/5 = 0 ou -3x +4 = 0
-3x = 2/5 ou -3x = -4
x = - 2/5/3 ou x = -4/-3 = 4/3