Sagot :
Re
2 ( x - 7 ) = 2 x - 14
3 ( - x + 1 ) = - 3 x + 3
2x - 14 = - 3 x + 3
2 x + 3 x = 3 + 14
5 x = 17
x = 17/5
Bonjour,
2(x-7)= 2x-14 et 3(-x+1)= -3x+3
à résoudre:
2(x-7)=3(-x+1)
2x-14= -3x+3
2x+3x=3+14
5x= 17
x= 17/5
x= 3.4 S= { 17/5 }
Re
2 ( x - 7 ) = 2 x - 14
3 ( - x + 1 ) = - 3 x + 3
2x - 14 = - 3 x + 3
2 x + 3 x = 3 + 14
5 x = 17
x = 17/5
Bonjour,
2(x-7)= 2x-14 et 3(-x+1)= -3x+3
à résoudre:
2(x-7)=3(-x+1)
2x-14= -3x+3
2x+3x=3+14
5x= 17
x= 17/5
x= 3.4 S= { 17/5 }