Bonjour, pouvez-vous résoudre ces équation svp c'est urgent:
a) -2(3 - 2x)=x-8
b) 8(1 + 7x)= -3(5 - 2x)
c) 3 - 3 (2x - 7)=2x -5(x - 3)
d) 2x- 3 (2 - 2x)=8(-x + 1)+2
a) -2(3 - 2x)=x-8
b) 8(1 + 7x)= -3(5 - 2x)
c) 3 - 3 (2x - 7)=2x -5(x - 3)
d) 2x- 3 (2 - 2x)=8(-x + 1)+2
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Bonjour,a) -2(3 - 2x)=x-8
- 6 + 4x = x - 8
4x - x = - 8 + 6
3x = - 2
x = - 2/3
b) 8(1 + 7x)= -3(5 - 2x)
8 + 56x = - 15 + 6x
56x - 6x = - 15 - 8
50x = - 23
x = - 23/50
x = - 0,46
c) 3 - 3 (2x - 7)=2x -5(x - 3)
3 - 6x + 21 = 2x - 5x + 15
- 6x + 5x - 2x = 15 - 3 - 21
- x = 9
x = - 9
d) 2x- 3 (2 - 2x)=8(-x + 1)+2
2x - 6 + 6x = - 8x + 8 + 2
2x + 8x + 6x = 8 + 2 - 6
16x = 4
x = 4/16
x = 0,25