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Lolilol311
@Lolilol311
May 2019
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Bonjour est ce que vous pouvez m'aider à résoudre ces équations en détaillant s'il vous plaît
1) 12x + 2/5 = 4/7 + x/2
Merci
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Christine17
12x + 2/5 = 4/7 + x/2
12x + 2/5 - 4/7 - x/2=0
24/2x-x/2+14/35-20/35=0
23/2x-6/35=0
23/2x=6/35
x=6/35x2/23
x=12/805
0 votes
Thanks 1
nadiab
Bonjour,
12x + 2/5 = 4/7 + x/2
12x-x/2= 4/7-2/5
2(12x)/2 - x/2 = (4*5-2*7)/35
(24x-x) / 2 = (20-14) / 35
23x / 2 = 6 / 35
produit en croix
23x * 35 = 2 * 6
805x= 12
x = 12/805
1 votes
Thanks 1
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12x + 2/5 - 4/7 - x/2=0
24/2x-x/2+14/35-20/35=0
23/2x-6/35=0
23/2x=6/35
x=6/35x2/23
x=12/805
12x + 2/5 = 4/7 + x/2
12x-x/2= 4/7-2/5
2(12x)/2 - x/2 = (4*5-2*7)/35
(24x-x) / 2 = (20-14) / 35
23x / 2 = 6 / 35
produit en croix
23x * 35 = 2 * 6
805x= 12
x = 12/805