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Sagot :
Bonjour
T'as pas plus long encore !!
2x + 5 =5x-4
2x - 5x = - 4 - 5
- 3x = - 9
x = 9/3 = 3
3x-8=8x+2
3x - 8x = 2 + 8
- 5x = 10
x = - 10/5 = - 2
2x+1=x-4
2x - x = - 4 - 1
x = - 5
4x-5=2x+2
4x - 2x = 2 + 5
2x = 7
x = 7/2 = 3,5
3x+4=8x-21
3x - 8x = - 21 - 4
- 5x = - 25
x = 25/5 = 5
-2x+1=7x-80
- 2x - 7x = - 80 - 1
- 9x = - 81
x = 81/9 = 9
2x-3=5x+3
2x - 5x = 3 + 3
- 3x = 6
x = - 6/3 = - 2
5x-3=3x-5
5x - 3x = - 5 + 3
2x = - 2
x = - 2/2 = - 1
2(x+3)=4(x-1)
2x + 6 = 4x - 4
2x - 4x = - 4 - 6
- 2x = - 10
x = 10/2 = 5
5(1-x)=3(2x+1)
5 - 5x = 6x + 3
- 5x - 6x = 3 - 5
- 11x = - 2
x = 2/11
-(x-2)=2(2x+1)
- x + 2 = 4x + 2
- x - 4x = 2 - 2
- 5x = 0
x = 0
3x+1=3(2-x)
3x + 1 = 6 - 3x
3x + 3x = 6 - 1
6x = 5
x = 5/6
3(x+1)=2(3x-5)
3x + 3 = 6x - 10
3x - 6x = - 10 - 3
- 3x = - 13
x = 13/3
-(5-2x)=3x
- 5 + 2x = 3x
2x - 3x = 5
- x = 5
x = - 5
4(2x+4)-3(5-x)=2(x+1)
8x + 16 - 15 + 3x = 2x + 2
8x + 3x - 2x = 2 - 16 + 15
9x = 1
x = 1/9
2(x-2)=3x+3(2x+1)
2x - 4 = 3x + 6x + 3
2x - 3x - 6x = 3 + 4
- 7x = 7
x = - 7/7 = - 1
-(x+2)=3(2x+1)
- x - 2 = 6x + 3
- x - 6x = 3 + 2
- 7x = 5
x = 5/7
2(x-1)-3(2x-4)=3x+5
2x - 2 - 6x + 12 = 3x + 5
2x - 6x - 3x = 5 + 2 - 12
- 7x = - 5
x = 5/7
3(2-3x)+4(x+2)=4x+2(x-2)
6 - 9x + 4x + 8 = 4x + 2x - 4
- 9x + 4x - 4x - 2x = - 4 - 6 - 8
- 11x = - 18
x = 18/11
5x+2-3(2-4x)=2(3x+4)
5x + 2 - 6 + 12x = 6x + 8
5x + 12x - 6x = 8 - 2 + 6
11x = 12
x = 12/11
-3(x+2)+4(5-x)=2x+5
- 3x - 6 + 20 - 4x = 2x + 5
- 3x - 4x - 2x = 5 + 6 - 20
- 9x = - 11
x = 11/9
3x+1=x-3
3x - x = - 3 - 1
2x = - 4
x = - 4/2 = - 2
3-4x=10x+7
- 4x - 10x = 7 - 3
- 14x = 4
x = 4/14 = 2/7
2(x+1)-4=4x+1
2x + 2 - 4 = 4x + 1
2x - 4x = 1 - 2 + 4
- 2x = 3
x = - 3/2 = - 1,5
3-2(2x+1)=5(2-x)
3 - 4x - 2 = 10 - 5x
- 4x + 5x = 10 - 3 + 2
x = 9
3x+2=6
3x = 6 - 2
3x = 4
x = 4/3
14x+1=8
14x = 8 - 1
14x = 7
x = 7/14 = 1/2
10x+14=19
10x = 19 - 14
10x = 5
x = 5/10 = 1/2
9x+7=28
9x = 28 - 7
9x = 21
x = 21/9 = 7/3
3x+2=x+5
3x - x = 5 - 2
2x = 3
x = 3/2
4x+7=x+12
4x - x = 12 - 7
3x = 5
x = 5/3
8x+5=4x+11
8x - 4x = 11 - 5
4x = 6
x = 6/4 = 3/2
10x+5=4x+20
10x - 4x = 20 - 5
6x = 15
x = 15/6 = 5/3.
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