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Sagot :

MAUDMARINE

Bonsoir,

Résoudre les équations :

5x=5

x = 5/5

x = 1

8x+3=19

8x = 19 - 3

8x = 16

x = 16/8

x = 2

4x-3=x+12

4x - x = 12 + 3

3x = 15

x = 15/3

x = 5

2(x+3)= -7x-3

2x - 6 = - 7x - 3

2x + 7x = - 3 + 6

9x = 3

x = 3/9

x = 1/3.

5x + (2x+3)- (4x+7)=13

5x + 2x + 3 - 4x - 7 = 13

5x + 2x - 4x= 13 - 3 + 7

3x = 17

x = 17/3.

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