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Sagot :

Bonsoir,
A 3x + 3x = 6x
B x+2 +x+2 =4x
Bonne soirée

Bonsoir,

2 (3x+ x+2) = 45

6x +2x+4 = 45

8x+4 = 45

8x= 45-4 = 41

x= 41/8 = 5,125

3x = 5,125 *3 =15,375  =L

x+2 = 5,125 +2 = 7,125 =l

Vérif:

15,375 +15,375 + 7,125 + 7,125 = 45

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