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Sportsissine
@Sportsissine
April 2019
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3/2x+4=13
6x-5=4x+3
3x+6=5x+2
5x-(2+2x)=7-x
4(x-4)=8+2(x+3)
3x-7.5/5=2x+1/2
pour demain merci de me donner le detail que je puisse comprendre. je vous remercie vivement par avance.
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winner123
Verified answer
Bonsoir
3 x /2 + 4 = 13
tu mets sous même dénominateur comme pour des fractions
3 x + 8 = 26
3 x = 26 - 8
3 x = 18
x = 6
6 x - 5 = 4 x + 3
6 x - 4 x = 3 + 5
2 x = 8
x = 4
3 x + 6 = 5 x + 2
3 x - 5 x = 2 - 6
- 2 x = - 4
x = 2
5 x - ( 2 + 2 x ) = 7 - x
5 x - 2 - 2 x = 7 - x
5 x - 2 x + x = 7 + 2
4 x = 9
x = 9/4
4 ( x - 4) = 8 + 2 ( x + 3)
4 x - 16 = 8 + 2 x + 6
4 x - 2 x = 8 + 6 + 16
2 x = 30
x = 15
3 x -7.5/5=2 x+1/2
30 x - 15 = 20 x + 5
30 x - 20 x = 5 + 15
10 x = 20
x = 20/10 = 2
0 votes
Thanks 1
winner123
en mettant sous dénominateur 2, je te l'ai écrit
Houriia2
http://nosdevoirs.fr/devoir/667163
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Report "3/2x+4=13 6x-5=4x+3 3x+6=5x+2 5x-(2+2x)=7-x 4(x-4)=8+2(x+3) 3x-7.5/5=2x+1/2 pour demain merci de me .... Pergunta de ideia de Sportsissine"
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Verified answer
Bonsoir3 x /2 + 4 = 13
tu mets sous même dénominateur comme pour des fractions
3 x + 8 = 26
3 x = 26 - 8
3 x = 18
x = 6
6 x - 5 = 4 x + 3
6 x - 4 x = 3 + 5
2 x = 8
x = 4
3 x + 6 = 5 x + 2
3 x - 5 x = 2 - 6
- 2 x = - 4
x = 2
5 x - ( 2 + 2 x ) = 7 - x
5 x - 2 - 2 x = 7 - x
5 x - 2 x + x = 7 + 2
4 x = 9
x = 9/4
4 ( x - 4) = 8 + 2 ( x + 3)
4 x - 16 = 8 + 2 x + 6
4 x - 2 x = 8 + 6 + 16
2 x = 30
x = 15
3 x -7.5/5=2 x+1/2
30 x - 15 = 20 x + 5
30 x - 20 x = 5 + 15
10 x = 20
x = 20/10 = 2