Explications étape par étape:
x = 1
multiplier
x X 2 - ( x + 1)= 0
x X 2 - x - 1 = 0
combiner
x - 1 = 0
x = 1
x = - 1/2 = - 0,5
x - 1 + x + 3 = 0
combiner
2x - 1 + 2 = 0
additionner
2x + 1 = 0
soustraire
2x = - 1
diviser
x = - 1/2
C x = - 2/3
x - 4 = ( 2x - 2) X 2
x - 4 = 4x - 2
soustraire
x - 4 - 4x = - 2
ajouter 4
- 3x = -2 + 4
additionner
- 3x = 2
diviser
x = 2/-3
x = - 2/3
D. x = 1/5
( x - 2 ) X 4 = ( - 3 - 3x ) X 2
distribué
4x - 8 + 6x = - 6
ajouter 8
10x = - 6 + 8
10x = 2
x = 2/10
réduire
x = 1/5
